Cleans and brightens exterior wood that has become discolored from dirt and weathering. Unlike bleach, it will not remove the inherent color of the wood. Wood Cleaner will clean pressure treated wood, but will not bring back the wood color because the color was lost in the original treating process. Mix 1 part Wood Cleaner to 4 parts water to use. This solution will clean from 100 to 200 sq. ft. per gallon of solution. Wood Cleaner will not remove paint, stain or clear finish that is in sound condition. However, it may dull painted and metal surfaces if it is not rinsed off quickly. Gallon.