Have you ever considered taking out their substrate and replacing it with paper towels, reptile carpet, or slate?
Loose substrates can be accidentally consumed by them.
Amanda good guess! And it's very loose they never eat it and when they do they're pretty good at spitting it out. I thought about doing the other methods it's just ugly as hell and nothing like their natural homes (Not that just dirt is) I wanted it to be as natural as possible. Not so hard to clean up if you stay on top of it, we change the soil out every month and clean the poo with gloves on so that I don't have to touch it everyday.. Yes they are very happy and healthy they give kisses all the time