PROBLEM TO BE SOLVED: To provide a composition having an excellent controlling effect against noxious arthropods.SOLUTION: The noxious arthropods are controlled by applying an effective amount of the noxious arthropods controlling composition containing as the effective components 4-oxo-4-[(2-phenylethyl)amino]-butyric acid and a compound represented by formula (A), wherein X1 indicates a hydrogen atom or the like X2 indicates a methyl group or the like X3 indicates a methyl group or the like X4 indicates a methyl group or the like and X5 indicates a trifluoromethyl group or the like.COPYRIGHT: (C)2011,JPO&INPIT【課題】有害節足動物に対して優れた防除効力を有する組成物を提供する。【解決手段】4-オキソ-4-[(2-フェニルエチル)アミノ]-酪酸と式(A)で示される化合物とを有効成分として含有する有害節足動物防除組成物の有効量を施用することにより有害節足動物防除する。[式中、X1は水素原子等を表し、X2はメチル基等を表し、X3はメチル基等を表し、X4はメチル基等を表し、X5はトリフルオロメチル基等を表す。]【選択図】なし
