I got a newsletter from the G.P. Cages Store that said if you add a "roof" to their kitchen area, they are much more likely to poop & pee in there on the wood pellets or other bedding than in the fleece area. They want to do it by their food & water but if they don't feel secure by having a roof, they will instead poop in their hideys & pee in corners & edges on the fleece. My two male piggies did that. So two days ago I added overhead coverage & today no pee on the fleece & only a few poops. It works! I used the plastic balcony piece that came with the store-bought cage that serves as the kitchen over one end with a water bottle, hay manger, & pellet dish. On the other end with another water bottle, hay manger, & pellet dish I draped a folded fleece over it. Dink & Doink loved the change & popcorned around under the roofs. Now I can scoop out a bit of the wood pellet bedding at each end as needed & add some more. So nice to not have pee on the fleece!