PROBLEM TO BE SOLVED: To provide a small animal control composition which even when kept being used under a specific environment (for example, an outdoor environment), can improve light resistance and maintain a control effect for a long term.SOLUTION: Provided is a small animal control composition comprising a resin, a small animal control agent, a light stabilizer, and an antioxidant. The light stabilizer contains one or more selected from the group consisting of benzotriazole-based ultraviolet absorbers, triazine-based ultraviolet absorbers, hindered amine-based light stabilizers, and carbon. The antioxidant contains one or more selected from the group consisting of hindered phenol-based antioxidants, phosphorus-based antioxidants, and amine-based antioxidants. The small animal control composition contains at least one of a triazole-based ultraviolet absorber as the light stabilizer and an amine-based antioxidant as the antioxidant.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】特定の環境(例えば、屋外環境)下で使用し続けた場合にも、耐光性を向上させ、徐放効果を長期間に亘り持続できる小動物防除組成物を提供する。【解決手段】樹脂と、小動物防除薬剤と、光安定剤と、酸化防止剤とを含み、前記光安定剤が、ベンゾトリアゾール系紫外線吸収剤、トリアジン系紫外線吸収剤、ヒンダードアミン系光安定剤及びカーボンからなる群より選択される1種以上を含み、前記酸化防止剤が、ヒンダートフェノール系酸化防止剤、リン系酸化防止剤、及びアミン系酸化防止剤からなる群より選択される1種以上を含み、前記光安定剤としてのトリアジン系紫外線吸収剤、及び前記酸化防止剤としてのアミン系酸化防止剤の少なくとも一方を含む小動物防除組成物。【選択図】なし