Chlorpyrifos is a non-systemic organophosphorus insecticide, acting as a cholinesterase inhibitor, with contact, stomach and respiratory action. It is used in agriculture, horticulture, viticulture and forestry, in a wide range of crops, and in disease vector (mosquito) control and other public health applications. It is used for control of Coleoptera, Diptera, Homoptera and Lepidoptera in soil or on foliage, household pests (Blattellidae, Muscidae, Isoptera), mosquitoes (larvae and adults), and pests in animal houses.