Quote Originally Posted by Sonya610 View Post
Peat Moss can have all kinds of stuff in it. It is potting soil which can include parasites or weird bacteria or whatever. Probably generally safe for most animals BUT if this garter is sensitive to something maybe not so safe.

If I were concerned and wanted the natural earth type look I would consider eco-earth or something similar for this enclosure instead. I am a newbie and not an expert, I like the look of eco-earth and bought some but am afraid of humidity levels being too high.
I agree. eco-earth (coconut fiber "peat") should be used instead. Regular gardening variety peat moss is too dusty. I wouldn't use it. I used it once before for a Pueblan milk snake and she developed a nasty sneezing problem. I switched to eco earth and she got over it pretty quickly. Eco earth dries quickly. Too much moisture shouldn't be a problem.

I would be a bit concerned about the mouth problem. There's a product used as a surgical scrub/wound cleanser that comes under different brand names and contains 4% Chlorhexidine. I dilute it to about 1% and use it to clean the mouth wounds twice a day, then apply a small amount of antibiotic ointment. Do this for about two weeks, keep the snake on paper towels, continue treatment for a week after it appears to be healed. The mouth might never go back to sealing properly so fine particulate substrate may be out of the question to use for this snake.