When added to holding tanks, Valterra Odorlos Holding Tank Treatment provides the naturally occurring bacteria with a continuous supply of the best alternative energy source to pure oxygen…nitrates. This eliminates the need for bacteria to target sulfate for energy, and the result is no holding tank odors. It is safe and effective for RV and marine holding tanks as well as septic tank systems.
The pre-measured 4-ounce tear-and-pour packets are great for quick trips and easy storage. For black or gray water holding tank systems, use 4-ounces of Odorlos plus 1-gallon of water to treat a 40-gallon tank. It is recommended to flush and empty the system weekly for optimal performance. To prevent odors/backup in a septic tank, use 16-ounces of Odorlos plus 4-gallons of water to treat a 1000-gallon tank. Do not mix Odorlos with other holding tank products.