Camco 39072 RV Dual Flush RV Holding Tank Rinser Sprays water into RV sewer lines to clear out clogged pipes Get two-way jet cleaning action with this unique holding tank and sewer hose rinser Creates a powerful spray that helps reduce odors and malfunctions in RV holding tanks and hoses Reduces odors Clear, break resistant polycarbonate adapters make it easy to see when the tank is done rinsing