The Camco Fresh Water System Cleaner and Deodorizer will clean your fresh water system for better tasting and odor free drinking water. If you need to dewinterize your tank and lines, and/or freshen up and deodorize, this safe, biodegradable formula has got you covered. No mixing or measuring is required; one gallon cleans up to a 100-gallon tank. One gallon cleans 100-gallon tank Biodegradable | TastePURE Spring Fresh