PROBLEM TO BE SOLVED: To provide an extermination agent spraying device that exterminates an extermination target effectively.SOLUTION: An extermination agent spraying device detects an extermination target, based on the ultrasound transmitted by an ultrasound transmission unit and the ultrasound receiving wave received by an ultrasound receiving part. When the extermination target is detected and a signal showing other extermination agent spraying device detecting the extermination target is received from the other extermination agent spraying device by own extermination agent spraying device, a determination is made whether or not the own extermination agent spraying device sprays the extermination agent based on a distance from the own extermination agent spraying device to the extermination target measured by the ultrasound and the receiving wave and the distance from the other extermination agent spraying device contained in the signal to the extermination target. When the distance from the own extermination agent spraying device to the extermination target is not more than the distance from the other extermination agent spraying device to the extermination target, the extermination agent is sprayed.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】駆除対象を効果的に駆除する駆除剤噴霧装置を提供する。【解決手段】超音波送信部によって送信された超音波と、超音波受信部によって受信された超音波の受信波とに基づいて駆除対象を検知する。駆除対象が検知され、かつ自駆除剤噴霧装置によって他の駆除剤噴霧装置が駆除対象を検知したことを示す信号を他の駆除剤噴霧装置から受信した場合、超音波および受信波によって計測された自駆除剤噴霧装置から駆除対象までの距離と、信号に含まれた他の駆除剤噴霧装置から駆除対象までの距離とに基づいて自駆除剤噴霧装置が駆除剤を噴霧するかを判定する。自駆除剤噴霧装置から駆除対象までの距離が、他の駆除剤噴霧装置から駆除対象までの距離以下である場合、駆除剤を噴霧する。【選択図】図1