SW Stripper Powder is for use on wood and concrete surfaces to remove dirt, grease, oil, paint, stain or sealers. It will work in cold water or hot water, and rinses free at any temperature. The optimum cleaning dilution for most surfaces is between 24 and 40 oz. of powder per 5 gallons of warm water. 10 lb pail can yield between 20 - 34 gallons. You can adjust the amount of powder to get the strength needed for best results. Use a stiff soft brush to loosen any stubborn debris, rinse with high volumes of water not high pressure. Neutralize the wood after with Wood Brightener Product No. 60770. Contains Sodium Hydroxide. Ships Limited Quanitity when shipped in individual packages.