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History of Bed Bug Management


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History of Bed Bug Management

  1. 1. Bed Bug SuPPleMent: Lessons From the Past The History of Bed Bug Management B y M i c hae l F. P ot t e r “A Strenuous Struggle, a vigorous campaign, is before any housewife who is called upon to dispute the occupancy of her home with that persistent pest unfavorably known as the bedbug, who, gorged with the blood of his victim, lieth up in his lair from daylight to candlelight, only to swoop down upon his helpless sleeping prey during the midnight watches.”  C. L. Marlatt, The Bedbug, 1916. F or centuries the common bed bug, Cimex lectularius L., was the most hated of household pests. Infestations were ram- pant, extermination was difficult, and treat- ments were sometimes as risky to people as to pests. In battling today’s global resurgence of bed bugs, much can be learned from the past. If history repeats itself, the bed bug could again become the stuff of nightmares. ANCIENT ORIGINS. Bed bugs have been biting people since the beginning of recorded time. Studies suggest the bugs first parasitized bats and then humans inhabiting the same caves in the Mediterranean region where civilization began. Most likely, relations between bugs and people were intermittent back then since hunt- ers and herdsmen moved around a lot, making it harder for bed bugs to become established. Life became easier for the bed dwellers with the formation of villages and cities. Fossilized bed bugs have been unearthed from archeological sites dating back more than 3,500 years — a time when they were considered both pest and Fumigating with hydrogen cyanide. The operator is opening a can of Zyklon discoids, a popu- potion. The Egyptians, for example, drank a lar bed bug fumigant in the 1930s and ‘40s. (Photo courtesy of E.J. Gerberg) 1 In print we typically see bed bug spelled with either two words or one word (bedbug). The modern scientific designation is two words although older writings often used one word. The entomological rule of thumb in the common naming of insects is to use two words if the insect truly resides within that hierarchal order of clas- sification, and one word if it does not (e.g. bed bugs and stink bugs are considered true bugs in the order Hemiptera, whereas neither a butterfly or dragonfly are true flies in the order Diptera).
  2. 2. Bed Bug SuPPleMent: Lessons From the Past bed bug cocktail as a cure for snakebite (asps). industry is again advocating routine preven- The Greeks and Romans burned them to make tive bed bug inspections. Catching infestations leeches loosen their hold. The ancients also early reduces spread into other areas and can believed that bed bugs cured many diseases lessen liability for some clients. Consider- when ingested with wine, beans or an egg. ing the limitations of current insecticides, To deter bed bugs, early Greek philoso- pre-emptive inspections of bed bug-prone phers (400 B.C.) advised hanging the feet of accounts seems a prudent strategy. a hare or stag at the foot of the bed. Others Another of England’s earliest bed bug suggested hanging a bear skin or setting a destroyers was John Southall, who published vessel of cold water under one’s bed while a 44-page treatise on bed bugs in 1730. The traveling. manual contained information on bed bug habits, prevention and control based on his ex- Title pages from Southall’s 1730 treatise on DISTRIBUTION & SPREAD. As civilization ex- periences. Southall cautioned against bringing the bed bug. The book sold for one shilling panded, bed bugs spread throughout Europe in infested furnishings and also recommended while a bottle of his “Nonpareil Liquor” bed and Asia, reaching Italy by 100 A.D., China that belongings of servants be inspected as bug killer cost two. by 600 A.D., and Germany and France in the well. To limit harborage and simplify treat- 1200s and 1400s. Heat generated from sleep- pungent smell resembled that of bed bugs. In ment, he also suggested that beds be “plain ing and cooking fires allowed the bugs to live England, bed bugs were simply referred to and as free from woodwork as possible” — a comfortably both in castles of the wealthy and as “Bugs1.” (See footnote on page 1.) The early far cry from many beds in use today. huts of the working class. The poor, however, Spanish word for bed bug — “chinche” is es- Southall also gained notoriety for his “Non- suffered the most; an observation made in pecially relevant today since Spanish-speaking pareil Liquor,” a supposedly terrific bed bug the 15th century and attributed to a lack of customers often refer to bed bugs as chinches killer which he obtained from a native while vigilant cleaning: “For they do not breed in or chinche de cama — bug of the bed. Other traveling in Jamaica. The formula for the liquid beds of which the linen and straw is frequently names once used for bed bugs include wall has been lost, but may have been derived from changed, as in the houses of the rich” (De louse, bed louse, wallpaper flounder, night quassia wood, a tropical tree with insecticidal Animalibus Insectes, 1603). Bed bugs were first riders, red coats and crimson ramblers. Bed properties (Busvine 1976). Many other “secret” reported in England in 1583, but were probably bugs did not occur in North America before bed bug formulas have been marketed over the there earlier. Soon after, they hitchhiked their the arrival of European settlers, thus there is millennia, a trend continuing to this day. Mr. way to the Americas with European explorers no word for them in the language of Native Tiffin had a pragmatic view of such remedies, and settlers. Aided by commerce, infestations Americans. noting “secret bug poisons ain’t worth much, initially arose in bustling seaport towns, ap- for all depends upon the application of them.” pearing farther inland later on. EARLY DESTROYERS. Methods of managing Some of the worst advice for killing bed bugs The bed bug resurgence in recent years bed bugs today can be traced to the first was published in The Compleat Vermin-Killer followed a similar pattern, with infestations European exterminators. Among the most (1777), instructing readers to fill the cracks of in the late 1990s first appearing in such “gate- famous were Tiffin and Son of London, who the bed with gunpowder and light it on fire. way” cities as New York, Los Angeles, San formed a business back in 1690 to exterminate Francisco and Miami. bed bugs for the wealthy. The gas-lit sign over THE 1800s. As noted earlier, bed bugs became The global lineage of bed bugs can also be their shop read: plentiful in North America with the coming of traced to their naming. In ancient Rome, bed “May The Destroyers Of Peace Be European settlers. As a deterrent, beds were bugs were called Cimex (meaning “bug”), Destroyed By Us. often made from sassafras wood and the crev- while the species designation lectularius re- Bug-Destroyers To Her Majesty.” ices doused with boiling water, arsenic and ferred to a bed or couch. The early Greek term Recognizing the constant threat of in- sulfur. This provided only temporary relief. for bed bug was Coris, meaning “to bite,” from festation, Tiffin noted: “We do the work by As villages became cities, life became crowded which the word coriander comes. Coriander contract, examining the house every year. It’s with people and bed bugs from around the (cilantro) is one of the world’s oldest spices. a precaution to keep the place comfortable as globe. Ships and railroads afforded ideal ac- They probably named it so because when the servants are apt to bring bugs in their boxes commodation for the bugs, and rapid transit leaves were crushed the and clothes.” Tiffin reported finding the most to where they had not been before. Hotels and bugs in beds, but cautioned “if left alone boarding houses were especially buggy, and they get numerous, climb about the corners smitten travelers unwittingly carried them of the ceiling, and colonize anywhere they from place to place in their trunks and satchels. can.” Centuries later the pest management Vigilant travelers learned to pull beds away from walls and immerse the legs in pans of oil. Others relied on pyrethrum powder: “Dusted Many “secret formulas” over the years between the sheets of a bed, it will protect the claimed to control bed bugs. These adver- sleeper from the most voracious hotel bug.” tisements were from the early 1900s. (USDADivision of Entomology Bulletin, 1896). Bed Bug Supplement 3
  3. 3. Bed Bug SuPPleMent: Lessons From the Past the house, a process made even easier in the signs of infestation. Today in similar fashion, 1930s by electricity, fans and forced air heating. some property managers have begun asking This enabled the bugs to thrive year-round, about bed bugs during pre-screening of pro- whereas before that, populations followed a spective renters. more seasonal trend, increasing as the weather During the war years, bed bugs were warmed. transported on bedding into many public During the 1930s and ’40s, bed bugs air-raid shelters. They also feasted on sleeping became a community-wide problem like soldiers in barracks and battlefront trenches, rats and mosquitoes. Infestation was worse and were spread on belts, backpacks, can- in poorer, overcrowded neighborhoods, teens and helmets. One interesting account although wealthy households had problems from World War I states, “In the East African as well. Besides being introduced on infested campaign the bugs invaded the cork lining of items, the bugs sometimes moved from house the sun helmets of the soldiers. As the helmets to house, escaping through exterior windows were piled together at night, all soon became and doors and traveling along walls, pipes infested and the soldiers complained of bugs and gutters. A similar observation of bed bugs attacking their heads.” (Medical Entomology, traveling outdoors between infested adjacent 1932). Bed bugs also occupied warships and buildings was recently made by a pest control the nooks and crannies of submarines. Besides firm (Permakil) in Cincinnati. the usual places, bed bugs were common years In Europe, an estimated one-third of dwell- ago in laundries, dressing rooms, factories and Frequent, careful examination of beds was ings in major cities had bed bugs and similar furniture upholstery shops. Theaters had big encouraged to find the first bed bug. A feath- ratios were reported in this country. Prior to problems and sometimes had to tear out entire er was sometimes used to apply kerosene and other liquids to cracks and crevices. move-in, mandatory fumigation of tenant rows of seats and install new ones. Coat rooms (Photo credit: Clemson Agric. College Bull. furniture was proposed. Some Swedish cit- and lockers in schools were commonly in- 101, 1941) ies even provided sleeping tents for citizens fested, as is happening again today. All modes while their premises and belongings were of transport including trains, buses, taxicabs Although such methods may have helped, being fumigated and they also contemplated and airplanes were spreaders of bed bugs. A they could result in incarceration today. building hotels for this same purpose. In Ger- 1930s survey of 3,000 moving vans in Sweden By the mid-1800s, bed bugs had become a many some landlords required a “clearance found bed bugs on 47 percent, foretelling big particular problem in poor, overcrowded areas letter” of sorts from an exterminator, stating concerns for moving and storage companies with low standards of cleanliness. Wealthy that the apartment being vacated showed no today. Perhaps most unnerving was that bed households with an abundance of domestic help discovered that bed bugs could be kept in check with vigorous housecleaning, espe- REFERENCES cially with respect to beds. Washing bedding, Benoit, J.B., N.A. Del Grosso, J.A. Yoder and D.L. Den- Marlatt, C.L. 1916. The bedbug. UDSA Farmers’ Bull. linger. 2007. Resistance to dehydration between bouts breaking down beds, and dousing the slats, of blood feeding in the bed bug, Cimex lectularius, is 754. Washington, D.C. springs and crevices with boiling water or enhanced by water conservation, aggregation, and Matheson, R.M. 1932. Medical Entomology. Charles C. grease from salt pork or bacon proved help- quiescence. Am. J. Trop. Med. Hyg. 76(5): 987-993 Thomas, Springfield, IL ful — but the bigger benefit from such efforts Busvine, J.R. 1976. Insects, hygiene and history. The Ministry of Health. 1934. Report on the Bed-Bug. His Athlone Press. University of London. London, GB Majesty’s Stationary Office, London. was early detection of infestations in their Cowan, F. 1865. Curious facts in the history of insects. more vulnerable initial stages: “The greatest Potter, M.F. 2008. The business of bed bugs. Pest Man- J.B. Lippincott & Co. Philadelphia, PA agement Professional. 76(1): 24-40. remedy is cleanliness, and a constant care and Doner, M.H. and E.G. Thomssen. 1943. Bedbugs…and Romero, A., M.F. Potter and K.F. Haynes. 2007. Insecti- vigilance every few days to examine all the their practical control. Pests. 11(7): 15-19. cide-resistant bed bugs: implications for the industry. crevices and joints, to make sure that none of Harned, R.W. 1925. Controlling bedbugs in steam-heated Pest Control Technology. 35(7): 42-46. the pests are hidden away” (USDA Report of rooms. J. Econ. Entomol. 18: 320-330. Romero, M.F. Potter and K.F. Haynes. 2008. Sublethal the Commissioner of Agriculture, 1875). As Hartnack, H. 1939. 202 Common Household Pests of effects of insecticides on bed bug behavior. PestWorld North America. Hartnack Publishing Co., Chicago, IL 2008. bed bugs again become plentiful, it will be in- Hockenyos, G.L. 1940. Bedbug spraying. Pests. 8(5): Stenburg, R.L. 1947. The techniques of application and teresting to see if hotels, apartments, and other the control of roaches and bedbugs with DDT. Pests. 12-16. stakeholders commit the resources required 15(8): 16-22. Hunter, L. 1938. Domestic Pests: What they are and for such preventative measures. how to remove them. John Bale, Sons & Curnow, Ltd. The Geigy Company, Inc. 1944. DDT “Now it can be London. told.” Pests. 12(7): 8-10. THE 1900s. Bed bugs received a big reproduc- Madden, A.H., A.W. Lindquist and E.F. Knipling. 1944. Usinger, R.L. 1966. Monograph of Cimicidae (Hemiptera- tive boost in the early 1900s, when central DDT as a residual spray for the control of bedbugs. Heteroptera). Thomas Say Foundation. College Park, 37(1): 127-128. MD. heating of buildings became common. By Mallis, A. 1945, 1954. Bed bugs and other bugs. Hand- Wright, W.H. 1944. The bedbug — its habits and life his- the turn of the century, cast iron radiators book of Pest Control. Mac Nair-Dorland Company, tory and methods of control. U.S. Public Health Service were delivering warm air to every room in New York. Supplement No. 175. Washington, D.C.
  4. 4. bugs used to be common in hospitals — an- vigilance” (C. L. Marlatt, USDA publication, mid-1940s. Applied alone or with pyrethrum, other pattern from the past which has resur- 1916). the effects were short-lived, seldom lasting faced in recent years (see “The Business of Bed longer than a day. Because the sprays lacked Bugs,” Pest Management Professional, 2008). BED BUG INSECTICIDES. Insecticides used for residual action and toxicity to eggs, treatments Heavy infestations of bed bugs likewise once bed bug control have a long and interesting his- had to be thorough and the wet deposit had to occurred in poultry houses and were spread tory. All sorts of concoctions were employed, come in actual contact with the bugs to be ef- via the crates in which birds were shipped or both liquid and gaseous, and some were as fective. Consequently, the materials performed held at market. A similar pattern in poultry toxic to people as to pests. better when problems were discovered and production is reappearing today. treated early, before infestations had spread Sprays. Typical bed bug remedies during the beyond beds to other areas of concealment. 1800s and early 1900s included arsenic and Experts of the day cautioned against “put- mercury compounds prepared by the druggist. ting too much reliance on the very numerous The poisons were mixed with water, alcohol preparations on the market which claimed or spirits of turpentine and applied with a to get rid of bed bugs” — sage advice that is brush, feather, syringe, eyedropper or oil can also applicable today. Follow-up spraying 10 wherever bed bugs were found. Mercury days to two weeks later, regardless of whether chloride, better known as corrosive sublimate bugs were seen or not, was recommended to or “Bed Bug Poison,” was a common remedy kill emerging eggs and any adults or nymphs used by both exterminators and householders. that were missed. Additional treatments were One way to apply it was with the whites of an made thereafter until no more insects were Much of what is known about bed bugs egg, beaten together and laid with a feather found. Fogging of rooms as was sometimes today was published before 1950. (Good Housekeeping, 1888). Unfortunately, done for fly control did little more than “acti- Bed Bug Poison also killed some people, ac- vate” the bugs — another lesson to consider Efforts were made back then to make cidentally or by intent. before revving up our fogging equipment habitations less favorable to bed bugs. Heavy, A much safer material used since the mid- versus bed bugs. wooden bed frames laden with cracks and 1800s was pyrethrum, prepared from dry As can be imagined, many of these early crevices were replaced with metal beds that Chrysanthemum flowers. The insecticidal bed bug preparations were smelly. Thus, were less preferred by the bugs and easier effect was first discovered in Iran; an early “perfuming” the spray was recommended to inspect. Attention was also paid to bed brand was known as Persian Insect Powder. in such places as hotels, theaters, coaches and bug-proof construction (see subsequent Pyrethrum was included in many early bed for “discriminating housewives,” whereas section on “Miscellaneous Methods”). Most bug preparations formulated as sprays and ill-smelling preparations were suitable for importantly, homemakers took steps to pre- powders. During wartime when quantities use in “jails, cheap lodging houses and vari- vent bed bugs from entering the home. This were in short supply due to military require- ous other free, public institutions” (Bed Bugs involved constant watchfulness and attention ments, other compounds were used such as And Their Practical Control, 1943). Since to clothes sent to the laundress, and to blankets rotenone, phenol, cresol, naphthalene and many of the petroleum-based products also brought home from summer camps, cottages Lethane 384, an organic thiocyanate which were highly flammable, buildings sometimes and suitcases after traveling. Frequent and also had activity against bed bug eggs. caught on fire if a match was struck too soon careful examination of beds was advised to Turpentine, gasoline, kerosene, benzene after treatment. As noted previously, the aid in finding the first bed bug. Interestingly and alcohol (an ingredient in Sterifab) were above-mentioned sprays were most effective there was little mention of preparing for the also widely used against bed bugs until the against light infestations discovered in the exterminator — surprising considering how early stages. Spraying was more tedious and much emphasis is placed on client prepara- unreliable against heavy infestations that had tion today. Perhaps this was because most dispersed beyond beds into other inaccessible households back then had fewer furnishings, areas. In these instances (and before DDT), knickknacks, clothing, toys and clutter. Con- fumigation was recommended. cern about spraying people’s belongings with pesticides was also less of an issue. Fumigants. Early bed bug fumigation often The bed bug epidemic during the first half involved burning sulfur, sometimes called of the 20th century prompted a great deal of research by universities and government 2 The first insecticidal composition of DDT developed agencies. Studies were conducted on bed bug by J.R.Geigy, the Swiss parent company of modern- biology and habits, risk of disease transmis- day Syngenta, carried the designation “Experiment No. G1750” later named “Gesarol” for the spraying of sion, and management. Much of what we agricultural pests. “Neocid” was the early designation know about bed bugs was discovered during Bed bug ads often were entertaining. The for DDT compositions used to control lice, bed bugs and other pests affecting man and animals. Much of the early this period (1900-1950). Notably, no simple cartoonist for this 1928 Flit ad was Theodore testing was done by a team of 29 scientists working at solution was discovered other than “eternal Geisel, better known as Dr. Seuss. the USDA Testing Station in Orlando, Fla.
  5. 5. Bed Bug SuPPleMent: Lessons From the Past the “fire and brimstone” method (brimstone Applicators worked in teams with one person being the ancient word for sulfur). A dish of opening cans while the other scattered the powdered sulfur was placed in the center of discs onto layers of newspaper, cardboard or the room, surrounded by a larger pan to keep into dishpan-type wire containers. the molten mass from spattering and setting Hydrocyanic acid gas could also be fire to the floor. Ready-made sulfur candles generated by sprinkling calcium cyanide could also be used but were more expensive. dust onto strips of paper on the floor, or by Metal fixtures prone to tarnishing and cor- placing water, sulfuric acid, and ounce-size rosion were removed or coated with lard or sodium cyanide “eggs” into earthenware Vaseline.® The sulfur fumes also bleached and pots. These methods had their own inherent damaged wallpaper and fabrics, especially risks and were generally less convenient than in the presence of moisture. Nonetheless, using discoids. In 1945, suppliers began advertising the the procedure was simple, affordable and Despite the drawbacks, fumigation was availability of DDT for civilian use, including relatively safe to humans, making it a viable long considered the most effective and effi- bed bugs. control option for both householders and cient means of eliminating serious bed bug professionals. The sulfur fumes were lethal infestations. Railroad cars and ships were by simply resting or crawling on previously to all bed bug life stages including eggs, but also fumigated, and fumigation chambers treated surfaces. While some studies reported had poorer penetration than some other gases and moving vans were widely used for de- a residual effect lasting at least six months, and sometimes had to be repeated. bugging people’s belongings. But all that Arnold Mallis in the second edition of his The gold standard for bed bug fumigation changed after the start of World War II when a Handbook of Pest Control (1954) indicated during the first half of the 20th century was new and more potent chemical spray became that samples of wallpaper which he sprayed hydrocyanic acid (cyanide) gas. Fumigating available — DDT. with DDT continued killing bed bugs three with cyanide was highly effective, but costlier years later! Experiments further showed that and far more dangerous than previously DDT. The discovery and development of DDT had no repellency and did not disperse mentioned methods. As with modern-day DDT for battling bed bugs and other pests is bed bugs throughout a room or building like fumigations, the entire building had to be legendary. Dichloro-diphenyl trichloroethane pyrethrum and some other materials. (Recent vacated, which was not always necessary (DDT — see footnote on page 5)2 was originally studies by University of Kentucky research- when burning sulfur. Due to the danger, synthesized in 1874 by a young German ers confirm that some pyrethroids also can cyanide fumigations were best performed by chemistry student working on his thesis, but produce irritancy or repellency in bed bugs professionals — but this was not always the the compound stayed in obscurity until 1939 (Romero et al. 2008). case. In the 1930s and ’40s, state agricultural when Paul Müller, a Swiss scientist with the DDT applied as a 5-percent oil-based spray experiment stations often provided instruc- Geigy Company, discovered its remarkable or 10-percent powder was so effective that all tions for using cyanide in their publications. insecticidal properties (Müller was awarded the bed bugs in a room could eventually be Some went on to say that local druggists could the Nobel Prize for the discovery in 1948). Ini- eliminated by thoroughly treating the bed supply materials and further advice — a risky tial quantities were allocated to protecting U.S. and nowhere else, since the bugs eventually business considering that breathing the gas military forces from louse-borne typhus and had to crawl onto the bed to feed. In practical caused unconsciousness within seconds and disease-carrying flies and mosquitoes during use, other locations in the room were also death within minutes. Many people without World War II. Beginning in 1942, DDT was also thoroughly treated to hasten eradication. the proper training and safety equipment evaluated against bed bugs in hopes of find- One application normally did the job — in were killed or seriously injured, and even ing a more effective and economical method contrast to the multiple treatments required professionals had mishaps using this effective of control in military barracks. Preliminary previously — and what we are experiencing but lethal material. results were deemed “phenomenal” and DDT again today. Various commercial preparations of soon became known as “the perfect answer Another aspect that helped hasten the bed hydrogen cyanide were available, including to the bed bug problem” (USDA Bureau bug’s demise was that DDT was relatively Zyklon B pellets and powder used in the of Entomology, 1945). By late 1945, several inexpensive and could be bought and applied gas chambers during the Holocaust. The suppliers were running ads in Pests and by anyone. Unlike fumigation, the material most popular and convenient formulation their Control (the precursor to Pest Control could be applied by householders and pro- used by pest control firms were “discoids,” Magazine), announcing availability of DDT fessionals alike. A few ounces of spray or an consisting of fibrous absorbent discs saturated for civilian (non-military) uses. ounce of the powder was enough to treat a full with liquid hydrocyanic acid. The discs were What made DDT special was its long-last- size bed and prevent re-infestation for at least packed in gastight metal containers and ing effectiveness as a dry deposit. No longer a year. For added convenience total-release opened with a special can opener. (Image 5, did sprays have to contact the bugs directly as DDT “bombs” were sold, the same ones used Cyanide Fumigation) When exposed to air, was required with other materials. For the first in wartime by the military. the liquid cyanide quickly volatilized into time, bed bugs residing in hidden locations According to Dr. John Osmun, professor toxic gas, necessitating use of a gas mask. and nymphs hatching from eggs succumbed, emeritus at Purdue University and one of the 6 Bed Bug Supplement
  6. 6. Bed Bug SuPPleMent: Lessons From the Past first to evaluate DDT against bed bugs — after three to five years of civilian usage it became hard to find populations of bed bugs on which to do further testing — another testament to the knockout punch of the material. d ChaSiNg BEd BugS iN MaRCh d Years ago people battled bed bugs as part of spring cleaning. An advantage of such timing was that in unheated homes, populations tended to be lower at the end of ENTER RESISTANCE. As bed bugs were disap- winter due to the effects of cold temperatures. The excerpt below is one family’s pearing, reports began surfacing that some account of battling bed bugs in rural Arkansas in the early 1900s. populations had become DDT-resistant. “To slow the bed bugs down and thin them out we took down and outside the beds Failures were first noted in barracks of the and all the bedding, emptied the old straw ticks and burned the straw. We washed Naval Receiving Station at Pearl Harbor in 1947 — only a few years after the product was and boiled anything that was washable and scalded the bed slats and springs and introduced. During the next 10 years, other poured boiling water in all the cracks and crevasses that the water would not ruin. cases of DDT resistance were confirmed, and We cleaned all other furniture and used a coal oil-soaked rag to get at places we by 1956, the National Pest Control Association could not pour water. We cleaned the walls as best we could, sometimes throwing was recommending malathion as an alterna- boiling water on them then re-papering… We set the bedposts in cans of coal oil and tive. Malathion as a 1-percent spray proved kept beds and furniture away from the walls about two inches. We then could sleep effective when applied thoroughly to the mattress, frame, baseboards, cracks and other in peace for a few weeks until another batch hatched out then we had the whole bit hiding places. To reduce odor, ventilation and to do over. All this seems like such a lot of hard work (and it was) but having bed masking agents were employed. Other prod- bugs was somewhat akin to having the itch or plague — embarrassing to have but ucts used during the 1950s to 1970s to control impossible not to have, especially for people who moved a lot from house to house.” occasional infestations of bed bugs included — Adele Meacham Wood’s Little Red River Journal diazinon (when the bugs became resistant to malathion), lindane, chlordane and dichlorvos (DDVP). Mattresses were sprayed and aired as part of the overall treatment. As with DDT, a insecticide are removed from the market. and set fire with a lighted match” (American single application often did the job, provided Journal of Nursing, 1922). Mattresses were spraying was thorough. Sporadic recurrences MISCELLANEOUS METHODS. Insecticides have also redesigned with fewer buttons, folds of bed bugs during the 1980s were eliminated long been the principal means of controlling and creases. Eliminating hiding places in ele- with organophosphate or carbamate insecti- bed bug infestations. Other methods have been ments of construction was also recommended. cides, none of which are available today. employed, however, and some of the same are Cracks and crevices were to be filled with History has shown that bed bugs can de- being tried again today. soap or other sealants. In the 1930s and ’40s, velop immunity to insecticides at a rapid rate. hospitals and hotels in Europe were being High levels of resistance to our most potent Bed bug-proof construction. Efforts were made constructed with metal windows and doors pyrethroids was confirmed recently in field in the past to make buildings less favorable and little or no woodwork. Floors were of ce- populations from around the United States to bed bugs. Wooden bed frames laden with ment or other tight composition, often having (see “Insecticide-Resistant Bed Bugs: Implica- cracks and crevices were replaced with metal no baseboards. Walls were smoothly painted tions for the Industry,” PCT, July 2007). What frames which were less favored by bed bugs in lieu of peeling-prone wallpaper — sage is more worrisome today is that we have few and easier to take apart and inspect. Another advice in modern-day hotel rooms where alternatives, underscoring what can happen advantage of metal over wood was that “alco- wallpaper borders are often installed at the when pests resurface after entire classes of hol or kerosene could be poured over the joints ceiling-wall juncture. Such bed bug-proofing ONE TOugh Bug starved adult bed bugs in one 1940s experiment survived a maximum An oft-mentioned statistic about bed bugs is their ability to survive of 550 days — but only 181 days at 73° F. Lacking a warm-blooded long periods without feeding. Longevity studies conducted in the host, young nymphs die sooner than older nymphs and adults, often early 1900s showed they can indeed survive more than a year succumbing within a few months. without feeding. One investigator (Bacot 1914) starved bed bugs Studies have shown that the reason bed bugs can persist so long in an outhouse for 18 months and found that several survived to without feeding is their remarkable ability to retain water, comparable feed another day. It should be noted however that bed bug longevity to arthropods adapted to dwelling in deserts. They retain moisture by is variable. having a water-impermeable cuticle (outer shell), and the capacity to Their ability to survive long periods without a blood meal is become quiescent while living in moisture-conserving aggregations influenced by such factors as temperature, humidity and life stage. (Benoit et al. 2007). Desiccant dusts have been used against bed Cooler temperature and higher humidity tend to prolong survival — bugs and other pests for centuries. Targeting their ability to conserve at a constant temperature of 45° F and 90-percent relative humidity, moisture makes sense considering they possess little vulnerability.
  7. 7. 1926 “Sometimes it is possible to destroy a light infestation before. Besides homes and hotels, watch for them in such places as schools, theaters, and localized in one room by thorough soaking of the bed especially health care facilities. Small cities and and other places with high-test gasoline.” towns will be spared for awhile but not for long. There will be new challenges this time around including an unprecedented mix and — Pennsylvania Dept. of Agriculture Bulletin on Household Pest Control, 1926 movement of people from across town and across the globe; more bug-friendly belongings and clutter in which to hide; fewer options efforts have long been abandoned in favor of LITIGATION. Litigating over bed bugs is mainly and more restrictions in respect to fumigation; comfort. The coziness of the modern sleeping a modern-day phenomenon — but not entirely. societal apprehensions about pesticides; and room is testament to how long it’s been since Bed bug bites have in fact triggered lawsuits a pervasive feeling today that when someone bed bugs were a state of mind. for more than a century. In 1895, for example, is harmed they should sue. a Chicago jury ruled that “no man shall be Bed bug management will be handicapped Lethal temperatures. If bed bugs have one vul- required to pay rent for a house infested with until the chemical industry invents a safe, resid- nerability — it’s elevated temperature. Heat bedbugs.” Editorializing on the verdict, the ually potent product with a permissive label. has been used as a control tool for centuries. news media noted that if the ruling held, “the This will not be easy given the priorities and Boiling water was used to scald bugs residing great majority of Chicagoans would be relieved challenges facing our industry partners. In the in bedding, bed slats, springs and other loca- of their rent bills.” In another early case involv- meantime, we must utilize the tools available. tions. Candles and plumbers’ torches also were ing a hotel, the court ruled that the presence The essence of bed bug management remains employed in the manner that some residents of bed bugs did not furnish grounds for the hard work and constant vigilance to prevent today are attempting to roast the bugs with recovery of damages because the plaintiff must or detect infestations in the early stages. This cigarette lighters. In the 1920s and ’30s, a larger have known that the hotel was previously cannot be achieved by the pest management version of today’s portable steamer was used, “buggy” (Bly vs. Sears, Daily Iowa State Press, industry without informed and cooperative as were heat-generating lamps plugged into 1902). Railroads were also defendants in bed customers. Thankfully, though, we’ve come electric outlets. bug litigation. In 1913, a Milwaukee man sued a long way from hanging rabbits’ feet at the A more efficient way of using heat was the St. Paul Railroad for $10,000 (a lot of money end of the bed. n adapted from methods developed in the early back then), claiming bed bug bites made him 1900s to de-infest granaries and flour mills. In so ill that it interfered with his business trip. Special thanks to all our senior industry leaders a 1916 article titled “Eradication of the Bedbug When the man returned home he stepped off who taught us the ways of bed bugs — Arnold by Superheating,” investigators showed it the train carrying one arm in a sling. Mallis, Harry Katz, John Osmun, Val Smitter, was possible to de-infest a two-story house Vern Walter and many others. in Canada by stoking up the furnace and THE FUTURE. History has shown what to expect other stoves during summer to a tempera- from bed bugs in the future — and the forecast Michael F. Potter is a professor and urban extension ture of 160°F. Similar success was reported in is concerning. All of society will be affected as entomologist at the University of Kentucky. He can another study where steam was used to heat infestations appear in the same places they had be reached at a 350-room dormitory on a college campus in Mississippi (Harned and Allen, 1925). In this case, maximum temperatures in bed bug-infested rooms ranged from about 110°F to 125°F, over a heating period lasting a few days. The authors concluded that very high d ThOROughNESS iS KEy d A common mantra of bed bug management today is that treatments must be thorough. The following excerpts show this same advice was given years ago… mortality can be achieved at temperatures as low as 110°F when maintained for two days, and from a few hours exposure to 120°F. In “Thoroughness is the key word and only experience will teach a man the first (1945) edition of The Handbook of how to best find every possible place bed bugs may be harbored. Most Pest Control, Arnold Mallis also mentioned operators take the beds completely apart and remove the casters from successfully using superheating to de-bug an the bed legs. Dresser drawers are removed, rugs rolled back and pictures animal rearing laboratory. He reported that taken from the walls. Floor lamps are upturned, moldings pried loose in after eight hours of heating, “the mortality was some cases and books and papers carefully examined…” so terrific, that a carpet of bedbugs covered — Bed bug Spraying, Pests and Their Control, 1940 the floor, and a slight draft through the room piled up windrows of the bugs against several objects on the floor.” Interest in using heat to control bed bugs all but vanished after the discovery of DDT. s “It should be remembered that amateur efforts usually produce amateur results.” Today’s interest in the approach reflects the — “Bed Bugs and Other Bugs,” Mallis Handbook of Pest Control, First Edition, 1945 lack of effective management options and greater concerns over pesticides. Bed Bug Supplement
  8. 8. Bed Bug SuPPleMent: Lessons From the Past 1-800-836-7432 Reprinted with the permission of PCT Magazine, August 2008..