When we got mites, I went to my local pet store and was told I was "be an idiot" if I didn't use PAM. We put Reptile Relief on the snakes and then cleaned the tanks and treated with PAM. No return of mites and it's been 2 months. It helped that most of the snakes came form that store and that I am in there at least twice a week (sometimes just to hang out with the staff and play with the larger snakes).