Wolman Deckbrite, 3 LB, Wood Cleaner & Coating Prep, Oxygen Bleach Based Powder Concentrate Formula, Cleans & Brightens Wood Decks, Fences & Other Exterior Wood Surfaces, Removes Gray Wood Fibers, Dirt, Mildew & Algae Stains, Prepares Wood For Finishing, Does Not Contain Chlorine Bleach, Will Not Harm Wood Or Plants, Concentrate Makes 7.5 Gallons Of Cleaning Solution.