PROBLEM TO BE SOLVED: To provide a pest control agent that has a composition having almost no adverse effect on human bodies but can show a sufficient action of inhibiting the behaviors of pests in a short time.SOLUTION: The present invention provides a pest control agent to be attached on pests, the agent containing cis-1,1,1,4,4,4-hexafluoro-2-butene.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】人体への悪影響が殆ど無い組成としながら、害虫に対する行動阻害効果を短時間で十分に得ることができる害虫防除剤を提供する。【解決手段】害虫に付着させる害虫防除剤において、cis-1,1,1,4,4,4-ヘキサフルオロ-2-ブテンを含むことを特徴とする。【選択図】図1