Agree! Dump any crud any time you can. Don't leave that stuff in there to continue to build sewer gas from the bacteria. I dump at the end of every trip with plenty of added water to help flush stuff out.
After dumping, I add about a cup of FOCA laundry powder to the toilet and flush with about 2 gallons of water. Drive to the parking spot and forget it. the FOCA powder contains enzymes that aid in breaking up poop.
We've never had a bad smell from our toilet. Have fun.