#$%^&*AU2015101282A420151015.pdf#####Abstract According to the present invention there is provided a method of treating a substrate of wood or other cellulosic materials which comprises applying to the substrate a preservative formulation comprising: at least one preservative in a carrier system comprising one or more low aromatic, or substantially low aromatic solvents. The invention also provides for a wood preservative formulation comprising such a carrier. In an embodiment, the carrier is selected from the commercially-available range of Exxsol@ D and Isopar@ fluids.