A safer, reduced toxicity alternative to harsh acid-based mineral cleaners. With a unique blend of organic salt and degreasing agents, iron and mineral deposits are easier than ever to remove. Non-regulated for shipping, handling and storage. Safer alternative to harsh acid-based mineral cleaners. Use on a wide variety of surfaces like: Showers, ceramic tile, grout, toilets, sinks, stainless steel, polished metal, porcelain, fiberglass, brick and more.