I just started using fleece yesterday. It cost around 40 bucks for the fleece. My cage is 2x6 and I got enough fleece for 4 changes. I put a layer of towels underneath.
So far it's not that bad. I just finished scooping out the poops an hour ago with a dust pan and brush. I was amazed at how much they pooped! It's quite a bit, you definitely notice it more on a blanket then when it's buried in all those shavings. They seem to really like it and run around in their cage more. I also made it so they can go in and out of their cage on their own by taking a cube off and cutting a whole in the coroplast, so that may also be why they're running around like mainacs! lol! The one thing I don't like so far is that in the places they have peed it's pretty damp which is kind of gross if they sleep in that spot. But then again, I guess it's not that different than if they peed in a pile of shavings and slept in it...right?
I'm doing a whole clean tomorrow. So I'll guess I'll see how well the fleece asorbed the pee. I might put newspapers underneath the towels next time...
Oh, and with the fleece I can hear them peeing at night! It's very loud! (but then again, that may just be my pigs) It's actually quite amusing though, lol.