Provided is an insect pest control product that is applicable to a water-based insecticidal composition and can continue to exert stable performance over a long period of time. The insect pest control product comprises 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 -4 to 1 × 10 -2 mmHg at 30°C, a glycol ether compound and/or glycol compound having a boiling point of 150-300°C, and water. The thermal vaporization/diffusion absorbent wick has an insecticidal component/compound condensation ratio (P 1 /P 2 ) within the range of 1.2-6.0, where the insecticidal component/compound condensation ratio (P 1 /P 2 ) is calculated from a weight ratio (P 1 ) of the pyrethroid insecticidal component and the glycol ether compound and/or glycol compound contained in the thermal vaporization/diffusion absorbent wick after use, and a weight ratio (P 2 ) of the pyrethroid insecticidal component and the glycol ether compound and/or glycol compound contained in the water-based insecticidal composition before use.
