I had the NO-FUSS flusher installed on my RV after having several stop-ups.
I flush with the valve open and watch the clear elbow until the water flows clear.
I have run this after getting home and draining the clear into the yard making sure all was clear.
What do you use to break up the solids in the tank? (or do you use anything)?
Mountaineer 348RLS
Dodge 3500 Cummings dually
Reese 16K Hitch
An Okie caught in Texas