Ectoparasitic insect pest controllers for animals and their usage.

摘要

Ectoparasitic insect pest controllers for animals, containing hydrazine derivatives of the general formula (I) as the active ingredient, and methods for application of the same: (I) Äwherein A is (II), (III), (IV), (V) (wherein R<4> and R<5> are each H, C1- 6 alkyl, or the like; and X is H, or one to five substituents selected from among halogeno and optionally halogenated C1-6 alkyl groups); R<1> is H or C1-6 alkyl; R<2> and R<3> are each H, OH, C1-6 alkyl, phenylcarbonyl, or the like; Y is H, or one to five substituents selected from among halogeno, nitro, and cyano; Z is halogeno, cyano, C1-6 alkyl, or the like; and W is O or SÜ. The insect pest controllers exert remarkable controlling effects on parasitic insect pests harmful to domestic or pet animals, e.g. fleas, lice, ticks.