If I had a snake with mites right now (I've only ever had 2, both many years ago) I'd first use the water w/ drop of soap to remove as many mites as possible, then I'd try the stuff that KMG referred to, as I've used other products they make & they're excellent. I believe that's quite safe too (I've read the ingredients), it's not a typical pesticide like PAM (Provent-A-Mite) or other toxic stuff. The water w/ soap is effective at drowning mites, but because you're NOT dunking the snakes head (!), some mites will likely remain around their eyes or chin. And it doesn't take many survivors to reproduce exponentially & return- such nasty things.