Azamethiphos is an organophosphorus pesticide, which works by interfering with the transmission of nerve impulses. It has been used in a spray form to control insects such as cockroaches and flies in buildings, warehouses and intensive farming installations. It has also been used as veterinary drug in Atlantic salmon fish farming to control parasites, i.e. inUK(particularly inScotland) in fish farming, to control external parasites such as sea lice on the Atlantic Salmon. This application replaces the use of the hazardous "red list" pollutant Dichlorvos.