Wet & Forget offers homeowners a safe and easy-to-use moss, mold, mildew and algae stain remover that is easier on the environment than traditional exterior cleaning products. With its non-caustic, non-acidic, bleach-free and biodegradable formula, Wet & Forget can be applied to any exterior surface – including roofing, siding, decks, stonework, walkways and pavement – and is gentle on surrounding plants and landscape.