#$%^&*AU2020213343A120200827.pdf#####Abstract Provided herein a wood preservative formulation comprising: a nonaqueous carrier; one or more anti-fungal preservative compounds; and one or more tertiary amine compounds. It is found that the tertiary amine component potentiates the efficacy of the fungicidal component. On the basis of several laboratory decay tests, it has been shown that C 14 -C1 8 alkyldimethylamines potentiate anti-fungal activity of azoles in non-aqueous, solvent-based formulations without the addition of organic acids.