Flitz aluminum industrial strength pre-clean is a natural organic salts formula that will instantly removes heavy tarnish without rubbing. This product is safer than traditional acid-based cleaners. Just spray and rinse. It's for indoor or outdoor use. It can be used on glass, aluminum, painted surfaces, fiberglass, stucco, brick, porcelain, brass and copper. In addition, it works great on heavy tarnish, rust and corrosion, calcium deposits and stains, heavy oxidation, water spots and stains. Not for chrome or patina finishes.<u><li>Natural organic salt formula</li><li>Instantly removes heavy oxidation, hard water spots, rust, calcium deposits and much more</li><li>Use on aluminum, glass, fiberglass, painted surfaces, stainless steel and much more</li><li>Industrial strength formula</li><li>Not for chrome or patina finishes</li></u>