I believe it is like a dog or cat getting fleas. It doesn't mean the animal is unhealthy or anything is wrong with the husbandry. It only takes one pregnant female to start a whole colony of mites on your snake. And it gets there anyway it can... contact with another snake that has mites, or "hitchhiking" on your sleeve from when you bumped up against the cage an infected snake was in while you were at the pet store to get a live feeder, etc.





