Can I leave my dump valves open when I have sewer hookups at my camp site?

Never leave the black tank dump valve open during use even if you have a sewer hookup at your campsite. If left open during use, the liquids will quickly drain leaving a pyramid of solids in the tank directly below the toilet. The solids are a source of odors and can plug the toilet as well as the entire tank when trying to remove the build up. You can leave the grey water tank dump valve open with a sewer hookup.

However a good rinsing and cleaning with Tank Blaster® may needed overtime to remove any grease and solids built up in the tank.