S-10, you probably get your snakes from better sources than I do. I got my corn snake from a private connection, never a mite, never a problem in it's life. I got the rest of my snakes, including the only one left living, from NYC pet stores. They are pretty much breeding grounds, at least many of them are, for mites on the reptiles they sell. I won't even go into how mad I got, especially at one guy, for his high and mighty, your snake just needs an appetite stimulant, trust me, I know a thing or two about reptiles, blah, blah, attitude story concerning my baby ball python. It was a great feeder, but succumbed to mites after three months. I have fought them successfully with my Burmese Python however, and it is doing quite well right now, at about 9 1/2 years old.
I met a guy at the local Petco who admitted to me that several years ago, when I was getting my bad snakes, that instead of being locally bred, here in the U.S., snakes were actually being brought in from the wild with mites on them, and thereby infesting other reptiles, whole pet stores, etc. That was interesting, and he actually stopped to make time to have a nice, pleasant, comprehensive conversation with me, so I have a tendency to believe that story.
Interestingly enough, speaking of domestic breeding, one of the biggest breeders of exotic reptiles in the country, is none other than U.S. pole vaulter Jeff Hartwig, one of the best in this country's history, although he has a problem winning the big one.