PROBLEM TO BE SOLVED: To provide a pest control agent that reduces exudation of active ingredient at low temperature and whose control effect persists for a long period of time.SOLUTION: Provided is a pest control agent in which an atmospheric temperature volatilization pyrethroid insecticidal component is retained in a poly-olefinic resin, and in which the atmospheric temperature volatilization pyrethroid insecticidal component is contained by 10-20 wt.% per total amount of the pest control agent, the poly-olefinic resin contains an ethylene-methyl methacrylate copolymer, and methyl methacrylate monomer unit is contained by 10-20 wt.% per total amount of the pest control agent, and thereby an excellent pest control agent can be obtained.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】低気温時の有効成分の滲出を低減し、その防除効力が長期間持続する害虫防除剤が提供される。【解決手段】常温揮散性ピレスロイド系防虫成分がポリオレフィン系樹脂に保持されてなる害虫防除剤であって、常温揮散性ピレスロイド系防虫成分を害虫防除剤全量に対して10~20重量%含有し、該ポリオレフィン系樹脂がエチレン-メタクリル酸メチル共重合体を含有し、メタクリル酸メチル単量体単位を害虫防除剤全量に対して10~20重量%含有することで優れた害虫防除剤ができる。【選択図】なし
