We use the "GEO" method for keeping the black tank clean. After the double/triple rinse, We add 1 cup powdered detergent and 1 cup powdered water softener in a gallon or so of water down the commode. The idea is for the mixture to slosh around and coat the walls with a film that, when used next time, keeps the solids and paper from sticking to the sides of the tank. Easy, economical and effective.
FR Wildwood 22 RKS
2007 1/2 Dodge 2500, Cummins 6.7
Retirement training completed
Currently enjoying second childhood