Mean Green® Multipurpose Pressure Washer Ultra Concentrate effectively cleans, degreases, and revives many exterior surfaces including roofing, exterior siding (vinyl, aluminum and wood), gutters, cement, brick, stone, concrete driveways, sidewalks, walls, stucco, screens, pool areas, patio furniture, engines, equipment, RVs, ATVs, boats and more. Ready to use, concentrated formula, this product can be used with pressure washer equipment or manually to clean many exterior surfaces.