Green's Copper Brown Wood Preservative Spray 33008, 14-Ounce Aerosol Seals the wood Protects against mold and mildew Kills off harmful insects Copper naphthenate and hydrocarbon solvent wood preservative Brush applied for surface protection of most woods Reacts with the cellulose of wood Formulation extends the service life of wood products Use to prevent deterioration of wood caused by mold, rot and decay