I used the method told to me by the guy I bought the snake from, he's also a breeder and uses this method himself.

I used a 3 to 10 ratio Nix/water solution (15 minutes with it on in a dry tub then a 15 minute water soak) on the snake and Vapona on the enclosure for 5 days.

I was checking to see if I didn't see any more mites after 20 odd days if they we're really gone.
I'm a bit sad seeing my snake in a enclosure that looks like a mental hospital, hehe

I looked for PAM but didn't find any here in Canada. :\