I would like some opinions on the best bedding for hairless rats. I have a female pair, one is hairless. At first I got ASPEN cause I read that it was the best bedding, however, I later read that it's not the best for hairless. I then got so phresh (paper bedding), but I seemed a bit expensive ($16 the block and I could only use it for 2 cleanings, cause it doesn't expand as much as aspen), so, my main priorities are odor control, and suitability for my hairless rat. I'd appreciate any input!!!