At what point is it TOO humid?

[wolftrap]

In the region where they live, it can be pretty humid during the wet season. I wouldn't worry about it as long as the substrate isn't actually damp. Damp substrate can cause mold or scale rot, but it's not a problem if it's just humid. If the temperature suddenly drops you'll get condensation, but that's more likely to be a problem in the rest of your house than in your snake's cage because your snake's cage is heated.

Thank you for answering my question!

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As long as their not constantly on wet substrate you should be fine. I wouldn’t worry about an enclosure that’s dry with high humidity.

Thank you!