The following is a list of types of poison by intended use:
Biocide – a chemical substance capable of killing living organisms, usually in a selective way Fungicide – a chemical compound or biological organism used to kill or inhibit fungi or fungal spores Microbicide – any compound or substance whose purpose is to reduce the infectivity of microbes Germicide – a disinfectant Bactericide – a substance that kills bacteria Viricide – a chemical agent which "kills" viruses outside the body Herbicide – a substance used to kill unwanted plants Parasiticide – any substance used to kill parasites Pesticide – a substance or mixture of substances used to kill a pest Acaricide – pesticides that kill mites Insecticide – a pesticide used against insects Molluscicide – pesticides against molluscs Nematocide – a type of chemical pesticide used to kill parasitic nematodes (roundworms) Rodenticide – a category of pest control chemicals intended to kill rodents Spermicide – a substance that kills sperm
