When trying to control mites, I use both Reptile Relief and PAM. With the Reptile Relief, I usually spray it in my hands and apply it to the snake with my hands. While applying to the snake, try and get it to lather up a bit, as this seems to help get it inbetween all of the scales. Make sure you put a good bit of focus to the underside of the snake, mites love it down there. I will then take a papertowel and lightly wipe off the excess R.R. The remaining R.R. will not be a problem.

As for PAM, since you can't seem to get it easily, go to Wal-Mart, and see if they have Equate brend bedding spray for lice. If they do, get some of that and use it like you would PAM (i.e. clean the tank, put in new bedding, spray the tank with the spray, let dry 15 minutes, put in the water bowl and replace the snake). Remember that with the Equate or PAm, if you change out more than 33% of the bedding, reapply the spray to the new bedding (this is for if you use Aspen or Cypress. If you use newspaper or some other completely disposable liner spray the new substrate every time it is changed, as eggs may be left behind.) The life cycle of mites is 30 days, and that is also the effectiveness of PAM. So continue treatments for at least 60 days. After no visual mites for 90 days has occurred, you should be in the clear.

Hope this helps, and good luck,