PROBLEM TO BE SOLVED: To provide a Dermanyssus gallinae control agent which has high safety and can be sprayed in a chicken cage under breeding, etc.SOLUTION: A Dermanyssus gallinae control agent comprises pyroligneous acid obtained by the dry distillation of bark as an active ingredient.COPYRIGHT: (C)2015,JPO&INPIT【課題】安全性が高く、飼育中の鶏ケージ等に散布することが可能なワクモ防除剤を提供すること。【解決手段】樹皮を乾留して得られる木酢液を有効成分として含有するワクモ防除剤。【選択図】図9