CLR Calcium, Lime & Rust Remover, 1 gal. is a powerful and fast-acting formula designed to dissolve tough calcium, lime deposits, and surface rust stains with ease. This versatile cleaner works effectively on a variety of surfaces including tubs, toilet bowls, sinks, glass, chrome, fiberglass, stainless steel, coffeemakers, humidifiers, dishwashers, washing machines, and shower heads. It removes calcium, lime, and rust quickly without the need for rubbing or scrubbing. The formula is septic safe and contains no phosphates, making it an environmentally responsible choice for maintaining cleanliness. Available in a convenient 1-gallon bottle, CLR a reliable solution for tackling stubborn stains and buildup around your home. Model Number: CL-4