Drano Liquid Clog Remover offers a reliable, cost-saving solution to the problem of blocked drains. It is simple to use & safe for all pipes in both kitchen & bathroom clogs. Clog remover starts working to break down clogs on contact. After 15 to 30 minutes, clogs are substantially minimized or dissolved. A final blast of hot water flushes away what's left of the clog. Clog remover contains a special ingredient to protect pipes from corrosion so it's safe for plastic, PVC, metal pipes, garbage disposals & septic systems. Clog remover won't harm pipes when used overnight & does not contain phosphates.