I don't know if they sell it in Canada, but if you want something to treat the snake itself with, try to find Jurassi-Mite. It's a spray that you put on a cloth and let your snake slide through. I used it on my girl to get rid of a few small ones and it's fine. Otherwise, soak them in enough water to cover the body (maybe with a cloth for them to rest their head on) with one to two drops only of the soap..Ivory or Dove. There's a thread in here somewhere that tells how to do it. Otherwise, that PAM will work in time.

Good luck!