Provided is a pest control apparatus that uses a heat medium that does not contaminate the surroundings as much as possible, facilitates carrying of a part that generates the heat medium, improves workability, and improves versatility. A tank 10 that contains water W and contains a exothermic substance H that generates heat vapor by reacting exothermically with the water W, a discharge port 20 that is provided in the tank 10 and discharges water vapor in the tank 10, A flexible hose 23 having one end connected to the outlet 20 and a water vapor ejector 30 connected to the other end of the hose 23 and capable of injecting water vapor toward pests were provided. The exothermic substance H was stored in a storage bag F formed of a sheet material that was formed in a size that can be stored in the tank 10 and through which water W can pass. The tank 10 includes a heat insulating container 12 having an opening 11 through which the storage bag F can be taken in and out, and a heat insulating lid 13 that opens and closes the opening 11 of the container 12 and seals the container 12 when closed. [Selection] Figure 1【課題】できるだけ周囲を汚すことない熱媒体を用いるとともに、熱媒体を発生させる部分の持ち運びを容易にして、作業性を向上させ、汎用性の向上を図る害虫駆除装置を提供する。【解決手段】水Ｗを収容するとともに水Ｗと発熱反応し水蒸気を発生させる発熱物質Ｈを収容するタンク１０と、タンク１０に設けられタンク１０内の水蒸気を吐出する吐出口部２０と、吐出口部２０に一端が接続される可撓性のホース２３と、ホース２３の他端に接続され害虫に向けて水蒸気を噴射可能な水蒸気噴射体３０とを備えた。発熱物質Ｈは、タンク１０に収納可能な大きさに形成されるとともに水Ｗが通過可能なシート材料で形成された収納袋Ｆに収納した。タンク１０は、収納袋Ｆを出し入れ可能な開口１１を有した断熱性の容器１２と、容器１２の開口１１を開閉し閉時に容器１２を密閉する断熱性の蓋１３とを備えて構成した。【選択図】図１
