Look for little black specs... Check heat pits, belly scales, run your hand down the body and see if any come off you. Treat your bedding with equate or walgreens bedding spray (treats lice) same ingredients as provent a mite just less expensive... If you can get it I like using natures chemistry mite treatment to soak my snakes (diluted with water of course) In general mites are a pain in the butt to get rid of... I treat animals with mites every 5 days for a while.. Working at a reptile breeding facility that also imports animals I spray the floor of my room (hatchlings and ball pythons) with 1 ounce of 12% permethrin diluted with a gallon of water once a week just as a preventative (importing we get stuff with mites its going to happen but this keeps them out of my stuff.