Sounds like mites! PAM would kill any bugs anyway, so that would work for this even if they aren't.
You want to take out the water bowl(DON'T spray the water bowl) and spray down the cage, the bedding(I like using paper towels when there is a mite infestation, you can see them), and the cage furniture according to the directions on the bottle. Now wait until the PAM fully dries and airs out and it's now safe to return your snake to the enclosure!
If you still see mites by the time it's time to clean again, do the PAM thing again! It gets rid of them fast though!