Smart Strip™ Paint Remover is a 100% biodegradable, water-based paint stripper that is extremely effective for removing multiple layers of architectural and industrial coatings from virtually all interior/exterior surfaces - wood, brick, metal, concrete, stone, plaster, fiberglass, and more. It does not contain methlyene chloride, any caustics, or toxic chemicals. It can be applied with a brush, roller or conventional airless sprayer.