Machinist Mate Ultimate Degreaser is a powerful degreaser safe for metals, with the exception of aluminum. DO NOT USE ON ALUMINUM! Machinist Mate Ultimate Degreaser will handle the toughest grease, dirt, and grime on machinery, engines, garages, kitchens, and other related applications. Machinist Mate Ultimate Degreaser works great as a stain remover for concrete, tile, and linoleum floors!