Pesticides include herbicides, miticides, insecticides, and fungicides and are found in almost every home for use either inside or outside. Schools, businesses, farms, and hospitals all use chemicals to control disease-causing organisms, insects, weeds, and other kinds of pests. Because of their purpose – to kill living organisms – these chemicals usually carry a risk to humans and other mammals. Regardless of the intended purpose, it is very important to always follow the directions for use, using the minimum amount required to be effective.