PROBLEM TO BE SOLVED: To provide a pest controlling agent volatile at a normal temperature for space having a mold prevention effect and an insect control effect, usable during storing textile products or furs by volatilizing the agent at a normal temperature, and particularly having the mold prevention effect, and to provide a method for controlling pests, and an effect-enhancer for mold prevention made of a dithiol-based compound.SOLUTION: There are provided: the pest controlling agent volatile at a normal temperature for space containing at least one selected from the group consisting of a pyrethroid-based compound, a diethylene glycol monoalkyl ether, a dipropylene glycol dialkyl ether and a dicarboxylic acid dialkyl ester, and the dithiol-based compound, as active components and the method for controlling pests by volatilizing the pest controlling agent volatile at a normal temperature for space at a normal temperature.COPYRIGHT: (C)2013,JPO&INPIT【課題】防カビ効果及び防虫効果を有し、常温において揮散させることで繊維製品や毛皮製品の保存時に用いることができ、特に防カビ効果に優れる空間用常温揮散性有害生物防除剤、有害生物防除方法、及びジチオール系化合物の防カビ効力増強剤の提供。【解決手段】ピレスロイド系化合物、ジエチレングリコールモノアルキルエーテル、ジプロピレングリコールジアルキルエーテル及びジカルボン酸ジアルキルエステルからなる群から選ばれる少なくとも1種並びにジチオール系化合物を有効成分として含有することを特徴とする空間用常温揮散性有害生物防除剤;前記空間用常温揮散性有害生物防除剤を、常温において揮散させることを特徴とする有害生物防除方法。【選択図】なし