Instant Brass & Copper Tarnish RemoverNatural Organic salts formula Instantly Removes heavy tarnish without rubbing. Safer than traditional acid-based cleaners. Just spray & rinse. Use Indoors or Out.Instantly removes:Heavy tarnish, Rust & corrosion, Calcium deposits & stains, Heavy oxidation, Water spots & stainsSafe on:Glass, aluminum, painted surfaces, fiberglass, stucco, brick, porcelain, brass & copper. Works great on heavy tarnish, rust & corrosion, calcium deposits & stains, heavy oxidation, water spots & stains.Not for: Chrome or Patina finishes. WARNING: This product can expose you to chemicals including Methanol which is known to the State of California to cause reproductive harm, and 1, 4-Dioxane which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.