I bought a Valletta A01-0184VP Master Blaster RV TANK CLEANING WAND with POWER NOZZE when I had pull behind. When I bought my 381th I cut the middle piece out and glued a 52 inch piece of pvc to the blaster. It works great for cleaning off the sensors if the get anything on them.
https://www.amazon.com/Valterra-A01-...a-436784995661