hm, what kind of substrate are you (or the breeder) using ? Don't those small white bugs come from some kind of wood chips substrate ?
They aren't snake mites, though. I don't think ??
Clean the cage thoroughly, let the snake soak in some lukewarm water (not deep, only halfway up the snakes body) and let her crawl through some damp towels. If those bugs aren't snake mites, they should be easy to get rid off, possibly without chemicals.
But I'm guessing...
Yeah now that you say it, I do remember people getting bags of aspen or cypress and them having wood mites in them. Wood mites i do believe are white bugs that are just a nuisance, but can't hurt your snakes and do die very easily.
6.5.15 Animals
1.2 Pomeranian's
0.1.15 Tropical Fish 2.2 Snakes:
0.1 2009 100% Het Piebald
0.1 Normal
1.0 Green Tree Python
1.0 Brazilian Rainbow Boa