Last week I put fleece in my piggies secong story, but I did not need anything under it because they never go to the bathroom up there. My problem is that they never come down and just sleep all day. I have decided to put fleece in the bottom today when I clean out their cage (I was originally only going to do this when my shavings ran out). Because I really did not plan for this to happen, I do not have any of the materials that you are suppose to use under the fleece and I was wondering if it would be ok to use newspaper, as long as its a nice thick layer of it? I believe that I may only have one towel to spare for now and it is not big enough to cover the entire cage.