How do you keep a black tank from smelling?

Black (and gray, for that matter) tanks smell because they contain human and other types of waste in them. That waste has a tendency to smell bad from the start, but over time, it can break down further, causing even more odor.

One solution is to use a lot more water in your tank. One method is to prime the system by adding two to five gallons (depending on your overall tank capacity) of freshwater after completing each empty. This helps to keep the waste-to-water ratio to a minimum.

Also, be sure to use more water while using the toilet than you would with your home toilet. Start out with a half bowlful of water. Once you’ve done your business and flushed the toilet, add in another half bowlful and flush it down. It’s a good habit to finish off with a third half bowlful to help create a seal between your RV and the black holding tank below.

The than these processes, the most you can do is mask the smell. Even adding enzymes, bacteria, or harsh chemicals that break down waste only makes that same smelly mess just a tank-load of sticky, smelly waste. Our special tank solution contains Pine-Sol, a good disinfectant AND a great odor masking ingredient. Give it a try.