Funny poll.
My ball pythons usually poop on the warm side. I have noticed that the corns will poop anywhere BUT the majority of my corns have a particular area that they will poop in, like they've potty trained themselves! Warm or cool side, but the same area per individual snake. Almost as if they keep it in one place as to not slither through it. In fact, some of my ball pythons think they are Picasso and treat their poop like it is paint. I hate it when they do that

OK, that's the most I've ever written about poop.