Rust-Oleum RockSolid Composite Deck Stain Remover

Composite Deck Stain Remover removes tough stains from mildew, mold, algae, fungus and moss and leaves the surface clean. Special surfactants penetrate the surface to safely and easily dissolve the toughest stains from dirt, oil, grease, bird droppings, tree sap and acid rain. Even removes gray weathering on wood, chalking and oxidation. Recommended for wood and composite decks, fences and concrete.