RV Digestit. Follow directions on the bottle for cleaning the tank, although it can be used as a regular chemical. You'll have stuff come out of the tank that you never knew could be in there. I love the guys tests on the sprayers and flushing the tanks. I had just posted a comment on another thread about that, that just running the flushers with the valve open doesn't work. I've always did the fill and dump thing, but the video kind of proved my theories I had always gone by.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)