Abstract: This application is directed to compositions for use in treating organic substrates, in particular lignocellulosic substrates. The composition comprises water, a water miscible solvent and an organic substrate treatment compound such as biocides. The application also relates to methods of delivering treatment compositions to the substrate. The methods may be for the purpose of prevention of growth of pest organisms, or for providing specific properties to the substrate for example.

Abstract: Method of delivering compositions to organic substrates, particularly lumber. Method involves heating a target zone of the substrate and then applying the composition to the surface of the substrate wherein the temperature of the composition is lower than that of the target zone of the substrate. Compositions include biocidal, strength modifiers, waterproofing and polymers.

Abstract: A biocidal composition useful for providing antifungal or antibacterial protection to a substrate such as wood, the composition comprises in its use form a use solution of pH of 4 or below containing at least one biocide and a source of free phosphite ions. A preferred source of phosphite ions is phosphorous acid. The composition allows deep penetration of a biocide such as copper oxine into where it can be fixed by pH change and confer a degree of protection beyond that hitherto obtained with such a biocide simply applied to the surface of the substrate.