Well, thanks everyone. I really wasn't worried about it, but this community seems very knowledgeable and so friendly and helpful, I just wanted to be sure.
I have a 5 year old leopard gecko that lives on crushed walnut shell bedding, and eats some pretty much every time she goes for a cricket, meal worm, or super worm. She poops every couple days, and impaction has never been an issue.
Me being fairly new to snakes though, I didn't know entirely if they were more at risk of such things.