Originally Posted by RossWilliams
A suggestion from one manufacturer was to half fill the tank and then add detergent and water softener. Then add several bags of ice cubes and drive around sloshing the mixture and agitating the ice against the walls.
Hi, the FitRV on YouTube demonstrated that ice cubes sloshing around really don't do a thing. Sales people don't know b/c they don't RV ... they are too busy selling them.