PROBLEM TO BE SOLVED: To provide a living space treatment agent for a piezo-type sprayer that is excellent in volatilizing an inorganic agent and has a lasting antifungal effect.SOLUTION: A living space treatment agent for a piezo-type sprayer has the following (A) component, (B) component, and (C) component, where a mass ratio represented by (B) component/(C) component is 0.1-1.0. (A) component: inorganic agent comprising transition metal. (B) component: organic solvent with a boiling point of 70°C or more and less than 150°C. (C) component: organic solvent with a boiling point of 150°C or more and less than 250°C.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】無機系薬剤の揮散性に優れ、防カビ効果の持続性が高いピエゾ式噴霧器用の居住空間処理剤を提供する。【解決手段】本発明のピエゾ式噴霧器用の居住空間処理剤は、下記(A)成分と、(B)成分と、(C)成分とを含有し、(B)成分/(C)成分で表される質量比が0.1~1.0である。 (A)成分:遷移金属を含有する無機系薬剤 (B)成分:沸点が70℃以上、150℃未満である有機溶剤 (C)成分:沸点が150℃以上、250℃未満である有機溶剤【選択図】なし