Originally Posted by TravellingBs
Here's a great tip I got this summer and it works: get a bag or 2 of ice cubes and dump them in the toilet before pulling out; drive around a bit (perhaps a loop or two of the campground you're in or the way home) and dump within the hour=viola! The ice safely gets things moving in there and melts to ensure there's nothing left. This works great for us!
Someone else mentioned having to dump only at a campground-check with your local sewer district as some of them have a place for dumping.
Time to lift it up, cover it up and watch it gather snow now.
Sorry,,, but you are probably right about gathering snow !!!