Algicides: Control algae in lakes, canals, swimming pools, water tanks, and other sites.
Antifouling agents: Kill or repel organisms that attach to underwater surfaces, such as boat bottoms.
Antimicrobials Antimicrobials: Kill microorganisms (such as bacteria and viruses).
Attractants: Attract pests (for example, to lure an insect or rodent to a trap). (However, food is not considered a pesticide when used as an attractant.)
Biopesticides: Biopesticides are certain types of pesticides derived from such natural materials as animals, plants, bacteria, and certain minerals.
Biocides: Kill microorganisms.
Disinfectants and sanitizers: Kill or inactivate disease-producing microorganisms on inanimate objects.
Fungicides: Kill fungi (including blights, mildews, molds, and rusts).
Fumigants: Produce gas or vapor intended to destroy pests in buildings or soil.
Herbicides: Kill weeds and other plants that grow where they are not wanted.
Insecticides: Kill insects and other arthropods.
Miticides (also called acaricides): Kill mites that feed on plants and animals.
Microbial pesticides: Microorganisms that kill, inhibit, or out compete pests, including insects or other microorganisms.
Molluscicides: Kill snails and slugs.
Nematicides: Kill nematodes (microscopic, worm-like organisms that feed on plant roots).
Ovicides: Kill eggs of insects and mites.
Pheromones: Biochemicals used to disrupt the mating behavior of insects.
Repellents: Repel pests, including insects (such as mosquitoes) and birds.
Rodenticides: Control mice and other rodents.

The term pesticide also includes these substances:


Defoliants: Cause leaves or other foliage to drop from a plant, usually to facilitate harvest.
Desiccants: Promote drying of living tissues, such as unwanted plant tops.
Insect growth regulators: Disrupt the molting, maturity from pupal stage to adult, or other life processes of insects.
Plant growth regulators: Substances (excluding fertilizers or other plant nutrients) that alter the expected growth, flowering, or reproduction rate of plants.