Restores heavily grayed and weathered outdoor wood surfaces. Removes gray wood fiber, failed wood stains, tannin bleeding, water stains, mildew, mold and discolored surface fiber from decks, fences, wood siding and log homes. Use to restore wood to its natural color and prepare it for recoating. Makes up to 20 Gal per gallon. Biodegradable. Non-flammable.