Snake rubbing itself raw

[Thundermonty]

If you need something more discreet than a glass tank, could you at least get a large plastic bin as big as the tank he had before? And also, big enough to put all his hides in?

One other thing I would check though - is it possible that he got some substrate or some other foreign object stuck in this mouth last time he ate, and he's been rubbing his face trying unsuccessfully to dislodge it?

This tub has the same floor space as his last tank. And i checked for substrate, there isnt any, but thanks for the suggestion.