Now that my piggies are well over a year old, they put out waaaay more poops than they used to. Vacuuming it doesn't work because the fleece gets sucked in. When sweeping with a whisk broom, the broom sticks on the fleece. Their cage is only a few inches off the floor so hunching down & having to tuck in a clean fleece all around the edges every day is not fun. I have been using one tucked-in fleece over the pellets that can stay in place for awhile & having another folded to size one on top, anchored down on the edges with rocks or they will burrow. This is easier to keep replaced with a clean one. Still not ideal. So now I am going to try sewing 2 fleeces together with some layers of extra fleece inside. Then "quilt" it, with lots of topstitching crisscrossing the whole thing. Made to exactly fit the cage & keep using a tuck-in fleece underneath. This should eliminate the rocks if it's stiff enough & allow it to be vacuumed, getting up the poops & not sucking in the fleece. If it works, I'll let you know. If I don't post here again, you will know it was doomed.