Comparative toxicity of ten insecticides against the cat flea, Ctenocephalides felis (Siphonaptera: Pulicidae).

LC50 values were determined for 10 insecticides against the cat flea, Ctenocephalides felis, by exposing adults to residues on glass for 24 h. Dichlorvos and propetamphos were most toxic against the cat flea. Other compounds tested, in descending order of toxicity, were diazinon, chlorpyrifos, carbaryl, phosmet, fenthion, chlorfenvinphos, temephos, and tetrachlorvinphos.