Treat the animal, treat the cage, treat the surrounding area.

These suckers can travel -- they can lay eggs in the corners of your crown molding or carpet and you'll keep getting mites, you can vacuum up eggs and they'll hatch in your vacuum bag and you'll keep getting mites (suck up some moth balls in the bag good for killing fleas that get sucked up in there as well). You need to keep treating for prevention for several months.

I prefer using BKII over PAM -- you get a better product and more for the $$$ - IMO.

Buy it at Pro Exotics or LLL Reptile Supply

Good Luck!