PROBLEM TO BE SOLVED: To provide a fumigant composition that can improve the drug efficacy.SOLUTION: A fumigant composition contains the following (A)-(C) components, with a mass ratio represented by (B) component/(C) component being 10-350. (A) component: an agent, (B) component: a foaming agent and (C) component: inorganic hydroxide.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】薬剤の効能を高めることができる燻煙剤組成物を提供すること。【解決手段】下記(A)~(C)成分を含有し、(B)成分/(C)成分で表される質量比が10~350である燻煙剤組成物。(A)成分:薬剤。(B)成分:発泡剤。(C)成分:無機水酸化物。【選択図】なし