Has anyone ever tried Rid-X in your holding tank to help clean the sensors and tanks? Seems like a much cheaper way to get rid of the grime in the tank. Thanks for your advise.
After emptying black tank close dump valve. Fill tank and overdose with Dawn disc liquid while filling. Let it set sit over night. Dump again and then use wand inserting in commode slowly twisting wand while slowly going in and out. I can stick a mirror down in mine and see it is spotless after this process.