Nobody likes stains in the bathroom. That's why this formula is so amazing. When all other stain removers fail, this is the final solution. Removes lime, mineral deposits, rust, water marks, and soap scum. Cleans, brightens and lifts embedded dirt, soap and oils on chrome, stainless steel, glass, porcelain, fiberglass, uncultured marble, tile and white grouting. Those pesky stains are no more with this powerful formula!