Bring back the pride in your patio by eliminating stains caused by moss, mold, mildew, and algae that have built up over the year. Eliminate those tough stains with Scotts Outdoor Cleaner Patio & Deck With ZeroScrub Technology. With a fast-acting formula, there is no need for scrubbing or power washing. Simply use the extended-reach, battery-powered wand to spray the convenient no-mix formula onto a dry, stained surface. Youll start seeing results in 24 hours. Scotts Outdoor Cleaner Patio & Deck With ZeroScrub Technology works great on vinyl, concrete, wood, wood composite, slate, cement, stone, brick, and many more outdoor surfaces with long-lasting results.