Wide Applications: kitchen water pipes, toilets, bathrooms, floor drains, oil clogging, sewage immersed pipes, and other drainage pipes. Sink and Drain Cleaner is made of a non-corrosive formula that's safe on septic systems. It won't harm your drains, pipes or septic system. Wonderful Powder Cleaning Tool Set! It will take time to work: Dissolves grease, hair, oils, soap scum and paper products easily. Safe, Easy & Effective. No measuring, no splashing, no mess. No need to fight with a disgusting toilet auger or plunger.