I've been reassured not to worry about when my snake decides to poop, but I'm a little paranoid. The first time we got him to eat, he MAY have eaten some substrate (I no longer feed in his home with aspen).

Anyway, I just want to know what to look out for if this continues. He's eaten 3 times since I've owned him, and I haven't found a poop yet.

Could he have just been fasting so long that he's now retaining practically all the meals?