We don't have any fancy flush system
But I have my own method.
First, make sure to use plenty of water every time you flush. A quick flush clears the bowl but the solids can build up to a mountain without enough water.
Before going home, do a normal dump. After dumping, pump a couple of gallons into the waste tanks from the fresh water.
Immediately after getting home, dump into a bucket and dispose of the stuff in the septic tank top pipe. The trip should have oscillated the left over mess to the tank low point and broken it down a bit.
So far, so good.
Oh, by the way, spray everything with bleach when done.