Pesticides Commonly Used (Unnecessarily) by Professionals
Pyrethrins were originally derived from East African chrysanthemum flowers
1970s, synthetic pyrethroids came into the market for agricultural purposes as they were synthesized from petroleum derivatives
Their mode of action is interference with transmission of nerve impulses.
Pyrethroids are one of the least acutely toxic insecticides to mammals because they are quickly deactivated by metabolic processes, however sensitization sometimes occurs in some individuals after a single exposure which causes either an asthmatic condition or a skin rash or inflammation.
These insecticides are esters, amides, or simple derivatives of phosphoric and thiophosphoric acids.
Act by overstimulating nervous system
Malathion, parathion, Diazinon, active ingredient chlorpyrifos.