Always leave the black tank dump valve closed unless you are actively dumping.
Rv black tank smell.
Follow the steps outline in this article how to clean your rv black tank to give your tank a good.
If there are no clogs or leaks but there still is a smell the toilet itself is dirty.
The toilet must be kept clean.
Every so often do your gray tank too.
Here are our tips for doing just that.
Most smells originate in your black tank but your gray tank can also get smelly especially in warmer climates.
This is the preferred tank freshener of many rv owners and if your problem is a lack of tank deodorant this should do the trick.
Keeping your black water tank odor free.
That said if the smell is really terrible this step will do little to disguise the stench and you ll need to try some other methods of smell removal.
If you flush and clean your black tank regularly you ll prevent tank waste buildup inside.