| abstract |
A composition for use in a treatment method, wherein the method is to kill animal parasites, the composition comprising, as active ingredient, at least one amide derivative represented by the following formula (1): ** (See formula) ** wherein, in formula (1), Q1 represents a phenyl group or a phenyl group substituted with a halogen atom; X1 represents a fluorine atom; each of X2, X3 and X4 represents a hydrogen atom; R1 represents a hydrogen atom or a C1-C3 alkyl group; R2 represents a hydrogen atom; each of Y1 and Y5 independently represents a halogen atom or a C1-C3 haloalkyl group; Y2 and Y4 each represents a hydrogen atom and Y3 represents a heptafluoroisopropyl. |