My corns go pretty regular, but I will say that in the beginning I had been using a type of reptile bark and was missing the poo. It can be easy to do, what I started doing before I switched to aspen was to take a plastic spoon and stir up the bark. Even if I happened to miss the poo, I could smell it. With my corns I see that they go regular (though I need to start keeping better records to be sure). My boa went 3 months before he left some poo, which was the size of a softball and he really isn't that big. With him I kept making sure that there was no hard section in him, I gave him the warm soaking baths that people kept recommending, got plenty of exercise, but he just wouldn't go. With a boa I wouldn't be as concerned, but with corns they seem to be the one meal, one poop out guys. What size is the snake and what size of prey are you giving it? That may have something to do with it.