PROBLEM TO BE SOLVED: To provide a pest control agent for controlling harmful organisms in agricultural and horticultural fields or harmful organisms to an animal such as a pet and a domestic animal or a domestic animal.SOLUTION: There is provided a substituted phenyl-piperazine compound represented by the following formula (1) or a salt thereof. (wherein, A represents an alkyl group having 1 to 20 carbon atoms which may be substituted or the like R represents an alkyl group having 1 to 20 carbon atoms which may be substituted or the like X represents an alkyl having 1 to 6 carbon atoms which may be substituted with a halogen atom, a cyano group or the like Y represents a halogen atom and an alkyl group having 1 to 6 carbon atoms which may be substituted m represents any one of integers of 0 to 4 n represents any one of integers of 0 to 8 p represents any one of integers of 0 to 2 and q and r represent any one of integers of 0 to 1.)COPYRIGHT: (C)2015,JPO&INPIT【課題】農園芸場面における有害生物や、ペット・家畜などの動物や家畜に対する有害生物を防除する有害生物防除剤の提供。【解決手段】下記式(1)で表される置換フェニルピペラジン化合物またはその塩。式中、Aは、置換されてもよいC1~C20アルキル基など、Rは、置換されてもよいC1~C20アルキル基など、Xは、ハロゲン原子、シアノ基などで置換されてもよいC1~C6アルキルなど、Yは、ハロゲン原子、置換されてもよいC1~C6アルキル基を、mは、0~4のいずれかの整数を示し、nは、0~8のいずれかの整数を示し、pは、0~2のいずれかの整数を示し、qおよびrは、0~1のいずれかの整数を示す)【選択図】なし