Prevent The Spread Of Disease—Encourage hand washing to remove disease causing organisms with this reminder sign Educate—about hand hygiene with common surfaces that can contain pathogens with this washing hands poster Grab Attention—Shock and awe with icky looking caricatures of pathogens on a green hand with this school nurse office sign Washing Hands Poster―helps you reinforce your hand hygiene messaging 11" x 17"— health decorations Grab attention with our best-selling poster. It shows people what unseen icky things can be on your hands. It pictures a vibrant green hand with caricatures of bacteria and viruses on it. This handwashing sign also lists everyday items people touch that can contain them. Washing your hands removes disease-causing organisms. School nurse office sign. Use in schools, clinics, and food service, or wherever handwashing takes place.