Enviro-friendly product that safely cleans, brightens and restores natural beauty to exterior composite wood. Also cleans exterior vinyl, aluminum, fiberglass and concrete. Biodegradable. Powdered concentrate. Mixes with water to make 5 Gal. of cleaner. 3/4 C. cleaner to 1 Gal. water. Coverage: 100 To 200 Sq. Ft. per Gal.