Hello. I have two guinea pigs, Gizmo and Chuck. At the moment, they are in a kiddie pool, along with their supplies and toys. I use carefresh bedding, which is proving to be an issue with them. You see, they like to push their little plastic igloo around while inside it, and this pushes all of their bedding to the sides of the pool, leaving none in the middle. I use the Carefresh bedding for my rats, but they don't push their houses around. I am very leary of shavings of any sort, but would they have a higher density and be harder to push? Also, I was considering putting papers down for them to use, since they can't push that around either. Any ideas?