CLR, 42 OZ, Build Up Remover, Dissolves Sources Of Clogs Such As Oil, Soap Scum, Shampoo, Conditioners, Shaving Cream, Toothpaste & Kitchen Waste, Keeps Drains Flowing Smoothly, Use In Sinks, Toilets, Showers, Drains, Garbage Disposals & Grease Traps, Fragrance Free, Safe For Septic Systems & All Pipes, Part Of The EPA Safer Choice Program.