Liquid-Plumr Heavy Duty Clog Remover provides a powerful, fast-acting solution for both fully-clogged and slow-running drains. This ready-to-use formula works on a variety of clogs caused by hair, food soils, grease and other materials that slow drains. Liquid-Plumr Heavy Duty Clog Remover is safe for disposals, septic tanks and plastic pipes. From Clorox Commercial Solutions, this drain cleaner is ideal for use in offices, schools, day care centers, restaurants, hotels and other commercial facilities.