64 OZ, Roto-Rooter Gel Clog Remover, Scientifically Formulated & Proven To Open Both Clogged & Slow Running Drains, Works On Contact To Open Tough Clogs Fast, Extremely Thick Formula Helps Power Through Standing Water, Safe On All Pipes, Septic Tanks & Garbage Disposals, Pour Slowly Into Drain Opening & Allow To Work For 10 Minutes, For Tough Problems Wait Longer, Flush With Tap Water.