PROBLEM TO BE SOLVED: To provide a louse repellent which can repel louse in a sustained manner.SOLUTION: The present invention provides a louse repelling method where, a louse repellent comprises menthyl ester as an active ingredient, the menthyl ester is preferably a compound represented by formula (I), and the louse repellent is applied to a place at which louse is to be repelled so that the amount of applied menthyl ester is at least 3 mg/cm2 (R is H or a C1-4 alkyl group).SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】持続してシラミを忌避することができるシラミ忌避剤の提供。【解決手段】シラミ忌避剤は、メンチルエステルを有効成分として含有し、前記メンチルエステルは、好ましくは式(I)に示される化合物であり、前記シラミ忌避剤を、シラミを忌避したい場所に、メンチルエステルの処理量が少なくとも3mg/cm2の割合となるように処理するシラミ忌避方法。(RはH又はC1~4のアルキル基)【選択図】なし
