Independent lab tests have proven that Roto-Rooter Gel Clog Remover clears tough clogs faster than other national brands. Why does it work so well? The professional gel formula has 25% more active ingredients than other products* and precise viscosity that powers through standing water and then clings to the clog until it is destroyed. Roto-Rooter Gel Clog Remover quickly dissolves nearly all types of drain clogs. Works on the toughest clogs from hair, soap scum, grease and more. *Compared to Drain Power Drain Opener