Exodor PORTA-PAK Holding Tank Deodorizer & Portion Control system disperses quickly into water. Used commercially in millions of applications every year, PORTA-PAK is now available to the Marine and RV parks. Never use a messy liquid again! Convenient 10 or 2 pk Just drop it in. * Unbeatable odor prevention * Pre-packaged portion control-NO SPILLS! * Breaks down waste and paper * Slide zipper bag for easy storage * 10 pk