CLR® Calcium, Lime and Rust Remover - 1 Gallon Bottle. Quickly and easily dissolves and removes tough calcium and lime deposits as well as surface rust stains. No scrubbing required. Use on bath tubs, toilet bowls, sinks, glass, chrome, fiberglass, stainless steel, most coffee makers, humidifiers, dishwashers, washing machines and shower heads. Contains no phosphates. Septic safe.