Keep your RV toilet clean and fresh with the Camco TST Blue Enzyme Clean Scent Toilet Waste Treatment a powerful and refreshing holding tank deodorizer. With an advanced formula specifically designed for use in RVs and boats including those with septic systems this toilet treatment contains a blend of surfactants and enzymes that quickly break down waste and eliminate odors for up to 7 days. The easy-to-use liquid formula allows you to simply pour it into your toilet and flush while the fresh clean scent transforms your restroom into a refreshing and calming oasis. Each bottle has 4 fluid ounces that treat a 40-gallon tank and offers long-lasting odor control and waste breakdown. Made with natural ingredients and free from harsh chemicals it s healthy for you and the environment. Upgrade your RV or boat restroom with Camco s TST Blue Enzyme Clean Toilet Treatment and love its refreshing scent and powerful waste breakdown.