Fresh Tabs – 6 per pack Clean, deodorize and de-winterize your entire fresh water system the easy way with Camco fresh tabs. Finally, a simple way to get your entire fresh water system cleaned out after storage. This is the one to use for major cleaning of the fresh water tank and system before activating for use. Just use one fresh tab per 15 gallons of tank capacity and follow the simple instructions on the package. It is recommended that you clean your fresh water tank at least three times a year. For freshening your water tank before each trip, use Camco’s baking soda capsule.