TOILET DEODORIZER WITH REACTIVE ODOR-ELIMINATING TECHNOLOGY: Experience a powerful RV odor eliminator that stops RV black tank odors for up to 7 days. Just 2 oz treats camper toilets with up to a 40-gallon tank. SUPERIOR FORMULATION, UNMATCHED PERFORMANCE: Get exceptional results with TST MAX RV tank treatments. The advanced chemistry is safe for septic systems. POWERFUL RV BLACK TANK TREATMENT: Eliminate clogs & odors in your camper/marine black water tank. This liquified RV black tank treatment breaks down waste & RV toilet paper, while also aiding in waste digestion for optimal sensor performance. MULTI-PURPOSE: This RV accessory is great for boating, full-time/occasional camping, boondocking, & portable camping toilets. Be sure to have this camper must-have with the rest of your camping supplies. MADE IN THE USA: Camcos TST RV toilet chemicals are proudly made in the USA & trusted by RVers and boaters for their holding tank treatment needs. REFRESHING SCENT | QUANTITY: Enjoy a pleasant, long-lasting citrus scent as you’re RVing without worrying about septic tank odors ruining your experience. Each jug includes 64 oz. Eliminates odors in your RV holding tank. 64 ounces. Environmentally safe non-formaldehyde formula. Ultra-concentrated. 2 oz. Treats a 40 gallon tank.