A general term used to refer to chemicals used to destroy, prevent, or control plant or animal pests. There are several classes of pesticides, defined by the type of pest they will influence, (e.g., herbicides, insecticides, rodenticides, molluskicides, and fungicides.) Pesticides can be highly toxic to humans.
Chemical products used to reduce or eliminate unwanted organisms, regarded as "pests". Pesticides are often used on gardens, agricultural land, roadsides, and golf courses to eliminate species considered undesirable or damaging.