PROBLEM TO BE SOLVED: To provide a pest extermination method for completely exterminating pest such as a cockroach and a composition for pest extermination used therefor.SOLUTION: A pest extermination method is provided by setting a composition made by mixing a virus having ability of exterminating a pest, a pheromone attracting the pest, and a bait which the pest likes in a place where the pest inhabits or a path through which the pest passes. A composition for pest extermination is made by mixing a virus having ability of exterminating a pest, a pheromone attracting the pest, and bait which the pest likes is provided.【課題】ゴキブリ等の害虫を完全に駆除する害虫駆除方法およびそれに使用する害虫駆除用組成物を提供することである。【解決手段】害虫を死滅させる能力を有するウィルス、害虫を誘引するフェロモン、および害虫が嗜好する餌を混合してなる組成物を、害虫が生息する場所または害虫が通る通路に設置することによる、害虫駆除方法、ならびに害虫を死滅させる能力を有するウィルス、害虫を誘引するフェロモン、および害虫が嗜好する餌を混合してなる、害虫駆除用組成物。【選択図】図4