PROBLEM TO BE SOLVED: To provide an antibacterial, fungicidal and ant repellent agent composition for woods, having both effects of high antibacterial and fungicidal effect and ant repellent effect.SOLUTION: The antibacterial, fungicidal and ant repellent agent composition for woods contains a new composition containing hexaconazole, diiodomethyl-p-tolylsulfone, or optionally IPBC. The new composition with a small concentration has excellent antibacterial and fungicidal effect to a large range of fungi. Further, acetamiprid included in the composition adds ant repellent effect.COPYRIGHT: (C)2012,JPO&INPIT【課題】高い防腐防カビ効果及び防蟻効果をあわせもった木材用防腐防カビ防蟻剤組成物を提供すること。【解決手段】ヘキサコナゾール、及びジヨードメチル-p-トリルスルホン、若しくはIPBCとを含有する新規組成物が、きわめて低い濃度で、広範なスペクトラムのカビ類に対して優れた防カビ効果及び防腐効果を有するだけでなく、更にアセタミプリドを含有することにより防蟻効果もあわせもった木材用防腐防カビ防蟻剤組成物。【選択図】なし