Control of ectoparasites with an aqueous solution of a pyrethroid (cypermethrin) an alkyl pyrrolidone and a surfactant used as an animal wetting solution to control blowfly ticks and scab

摘要

Ectoparasites such as blowfly, lice, keds, ticks and scab in animals such as sheep are controlled by diluting an aqueous emulsion concentrate of a substantially water insoluble insecticide in a delivery system to form a homogenous aqueous animal wetting solution containing from 25 to 500 mg/litre of an insecticide, and wetting the animal with an effective insecticidal amount of the solution. The concentrate delivery system contains a surfactant system and a co-solvent mixture of an N-(C1 to C4) alkyl pyrrolidone and an N-(C6 to C14) alkyl pyrrolidone. The insecticide may be a pyrethroid insecticide such as cypermethrin.