I could name many things but a list of stuff is more a personal choice. However, You state that holding tanks are empty except for what little water needed to flush. It isn't a good idea to allow the tanks to be empty. Stuff will dry and harden on the inside and make it very hard to get off. The pipes from the tank to the gate hold quiet a bit of water before any is actually left in the tank. I'd say to put back at least 2 gallons every time you dump the tanks to keep thing wet and easy to clean. Plus the water sloshing around in there does a good job of cleaning by itself while you're in route Patter.
THE ROLLING TURTLE
2005 Dutchmen Express 28A Chevy chassis
2005 Saturn Vue toad Photo's in and of my Rig