Thompson's WaterSeal TH.087731-42 Cleaner, 2 lb Bottle, Liquid, Pack of 4Removes stains from dirt, mildew, algae and fungus on a range of outdoor surfaces, including wood and composite decks, fences, concrete, masonry, brick, stucco, outdoor furniture, roofs, siding and some fabrics such as awnings and vinyl plastics. It is an effective, oxygen powered cleaner concentrate that is biodegradable and gentler than chlorine bleach based formulas. Unit: EA UPC: 032053877315 Model Number: TH. 087731 42