Thetford Aqua-Max Holding Tank Treatment-6Pk.-8oz. Bottles Quantity in Basket: None Code: 363-96633 Price: $12.89 Shipping Weight: 2.50 pounds Quantity: THETFORD Aqua-Max Spring Showers HOLDING TANK DEODORANT-8 oz.bottles 6/BoxFormulated to neutralize unpleasant odors. An advanced action, triple action enzyme works to accelerate waste digestionpreventing clumping, clogging and residue build-up in holding tank. One 8oz. pack treats approx. 40 gallons of waste water.