594165 Disclosed herein is a wood preservative containing 3-isopropyl-2-trifluoromethyl benzoic acid anilide used in the treatment or prevention of wood rotting fungi. Additionally, the preservative which further contains a triazole-based fungicide, such as cyproconazole, epoxyconazole or tetraconazole. Additionally, the preservative which further containing other antibiotic compounds, such as copper compounds.