Drano 605723 Drain Cleaner, Liquid, Green, Pleasant, 900 mL

With a unique formula containing natural enzymes and bacteria, Drano® max build-up remover helps prevent clogs from forming in your pipes. This product will not open clogs. Use it on a monthly basis to keep your drains running smoothly and prevent clogged drains. An ounce of prevention is worth a pound of cure.