Scotts Patio & Deck No Scent Outdoor Cleaner 2 qt Liquid (6 Pack)

Works great on large surfaces and hard to reach areas (siding, roofs, patios, decks, etc.). Dual-Action formula starts working on contact & eliminates tough stains from Moss, Mold, Mildew & Algae. No scrubbing or power washing needed. Fast acting on Moss, Mold, Mildew & Algae - Visual results in 24 hours. Simple application - just spray and walk away.