An animal ectoparasite-controlling agent comprising a benzylamide compound represented by the formula (1): wherein R3 represents a hydrogen atom a halogen atom a cyano group a C1-C6 alkyl group a C1-C6 haloalkyl group a C1-C6 alkoxy group or a C1-C6 haloalkoxy group and R4 represents a C1-C6 alkyl group substituted with one or more C1-C6 alkoxy group(s) a C1-C6 alkyl group substituted with one or more cyano group(s) a C1-C6 alkyl group a C1-C6 haloalkyl group or a C3-C6 cycloalkyl group, as an active ingredient and an inert carrier, has an excellent controlling effect on animal ectoparasites.
