ZymeCLING Multi-Purpose Bio-Enzymatic GEL is made to cling to the inside of drains and pipes so that it may continue working around the clock. ZymeCLING is fast acting and extremely effective at breaking down and digesting organic material (proteins, starches, and sugars) from hard to reach drains and areas where drain flies breed. ZymeCLING helps eliminate odors from drains and improve flow in slow drains. Safe for all types of plumbing and is non-pathogenic and non-caustic.