"Provent a mite. Follow the directions. The ones not on the snakes will either go back to the snakes or die. And the ones that go back to the snakes will get killed off by another treatment of provent a mite."

That might work. But i would still maybe cautiously advise to see a vet. Preferrably one with snake and/or reptile experience. Thats the safe way.

Best Regards