Provided is an insect pest control product capable of effectively controlling flying insect pests. An insect pest control product comprising a thermal vaporization/diffusion absorbent wick for vaporizing and diffusing a water-based insecticidal composition containing a pyrethroid insecticidal component having a vapor pressure of 2 × 10<；sup>；-4<；/sup>；to 1 × 10<；sup>；-2<；/sup>；mmHg at 30°C, a glycol ether compound and/or glycol compound having a boiling point of 150-300°C, and water, wherein a concentration of the pyrethroid insecticidal component in diffused vapor particles one hour after the start of vaporization and diffusion is 1.5-18 times as high as a concentration of the pyrethroid insecticidal component in diffused vapor particles immediately after the start of vaporization and diffusion.提供一種可有效地防除飛翔害蟲之害蟲防除製品。 一種害蟲防除製品，包含用以使含有如下的成分之水性殺蟲劑組成物蒸散的加熱蒸散用吸液芯：30℃下的蒸氣壓為2×10-4~1×10-2mmHg之擬除蟲菊酯系殺蟲成分，與沸點為150~300℃之乙二醇醚系化合物及/或乙二醇系化合物，與水，自蒸散開始經過1小時後的蒸散粒子中的擬除蟲菊酯系殺蟲成分的濃度成為剛開始蒸散後的蒸散粒子中的擬除蟲菊酯系殺蟲成分的濃度的1.5~18倍而構成。
