Happy Campers Odorless Holding Tank Treatment and Healthy Boater Odorless Holding Tank Treatment are industry “side-kicks”. Each product will work in temperatures exceeding 100 degrees and will continue to work until your boat holding tank is pumped out or you dump your RV holding tank. A treatment of just 1 ounce per 30 gallon tank keeps your boat or RV holding tanks odor free. Healthy Boater and Happy Campers are the easiest and most cost effective holding tank treatment products on the market.