ECTOPARASITICIDAL FORMULATIONS

摘要

The invention provides an ectoparasiticidal formulation which comprises an ectoparasiticidal agent, preferably the pyrethroid tetramethrin, as the pesticidally-active ingredient, together with a crystallization inhibitor selected from the group consisting of alkyl-substituted pyrrolidones, and optionally, one or more organic solvents and/or co-solvents. Preferably, the crystallization inhibitor is N-octyl pyrrolidone, and the organic solvent, if present, preferably comprises diethylene glycol monoethyl ether. The ectoparasiticidal formulation surprisingly yields a significantly enhanced speed of kill. Methods for manufacturing the formulation, as well as methods for treating animals infested with ectoparasites, are also disclosed.

主权项

1. A method of treating an ectoparasiticidal infestation on an animal, the method comprising topically administering to the animal a composition comprising (a) the pyrethroid tetramethrin, (b) N-octyl pyrrolidone as a crystallization inhibitor, and (b) at least one organic solvent, wherein said composition excludes neonicotinoids, chlorantranilprole and cyantraniliprole.