
Substrate question for a gecko missing an eyelid
Hello folks, I was brought this leopard gecko because a pet store was going to "get rid of him" due to length of stay and no interest over a minor deformity. One of his eyelids is either missing or deformed. I had a clean/disinfected tank, heating elements, and hides available after upgrading my hognose snake, but I wasn't sure what substrate to use. He's been on a piece of flannel for a couple hours while I find the right substrate.
So my question: given that he can't close one of his eyes, should that change whether I consider a dirt/sand mix compared with, like, an actual reptile carpet (instead of the temporary flannel)? If I need to do the carpet, does anyone here foresee an issue with providing a dig box due to the eye thing?
My snake is due for his annual checkup, so I'm going to make a simultaneous appointment for the gecko to see if there's anything else obviously wrong.