Avoid and clear away drain clogs with America's #1 drain opener. The thickened formula easily penetrates standing water and heads straight for the clog. Cleaner is able to quickly dissolve hair and food particles and is safe to use on disposals, septic tanks and plastic pipes. Chemicals/Cleaners Type: Drain; Application: Septic Tanks, Disposals, Plastic Pipes.; Applicable Material: Plastic, Stainless Steel; Chemical Compound: Sodium Hypochlorite.