PROBLEM TO BE SOLVED: To provide an evacuation avoidance method that is applicable over a wide area without the evacuation of animals including human and does not take much effort.SOLUTION: An evacuation avoidance method includes exposing an article having microorganisms deposited on its external surface to a low concentration chlorine dioxide gas of 0.01-0.05 ppm in concentration to deactivate the deposited microorganisms, thereby avoiding the evacuation of animals.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】ヒトを含む動物を待避させることなく、広範囲に適用可能であり、かつ手間の掛からない待避回避方法を提供する。【解決手段】外表面に微生物が付着した物品を、濃度0.01~0.05ppmの低濃度二酸化塩素ガスに曝露して付着微生物を不活化することにより、動物の待避を回避する待避回避方法。【選択図】図1