The insect pest control material of the present disclosure includes a carrier and a pyrethroid compound that is vaporized at normal temperature and held on the carrier, wherein a pyrethroid compound having a normal temperature volatilization at least in an amount represented by the following formula (I) As shown in FIG. Retention amount (mg) = 100 mg + A B (I) A: Maximum volatilization amount per day (mg / day) of pyrethroid compound at room temperature volatilization B: Use period (days)本開示の害虫防除材は、担体と、この担体に保持された常温揮散性のピレスロイド系化合物とを含み、少なくとも下記の式(I)で示される量の常温揮散性のピレスロイド系化合物が、担体に保持されている。 保持量(mg)=100mg+A×B (I) A:常温揮散性のピレスロイド系化合物の1日あたりの最大揮散量(mg/日) B:使用期間(日数)
