wanderingbob wrote:
Why do you feel the need for such a device ? Many of us have been RVing for twenty or thirty years with out one !
You are correct. I've never used 3rd party clean out tools either. And, never had problems with my many Black Water tank plugging up with too much sticky stuff.
For some folks before winterizing, I read many times they fill black tank 1/3 full with clear water (garden hose down the toilet bowl hole), add 2 x large bags of ice and drive home. As they drive home, the ice cube rub the inner sides of the black tank and "clean its sides". And, help clean sensors as well. When they get home, they simply dump the melted ice / cold water inside their black tank. From a white board, this low cost clean out method should work. I've never done it myself but it should work - without modifying or cutting holes on the side of the factory black tank.