Microorganisms are everywhere and can easily spread between surfaces and people. Washing hands kills microorganisms and prevents sickness, especially before preparing food, after using the bathroom, touching animals or garbage, coughing/sneezing, and caring for sick people. The proper handwashing technique involves lathering soap for 20 seconds and rubbing all hand surfaces together and under fingernails before rinsing and air drying hands to avoid spreading microorganisms with towels. Hand sanitizer with 60% alcohol content can also kill microorganisms when handwashing is not available but cannot remove all types of microorganisms like handwashing can.