I agree with reptile spray. I had a mite problem with one of my guys and reptile spray took care of it.
Switch the bedding to white paper towels. Then spay them once a week with the reptile spray. Make sure you let it sit on them for a good 2-3 minutes before wiping them down.
Take all tubs, hides, water bowls etc and spray with diluted bleach (I use 10:1), clean and dry. Then spray with reptile spray, and let it air dry. Then put everyone back in.
I also layed out paper towels on a black trash back and spray with reptile spray. Let them dry over night, then when dry use those special treated paper towels as your "bedding."
It really helps to have doubles or extra tubs for all animals or what you'll be waiting all day to get it done right.
Do this for 3 consecutive weeks and it should do the trick.