I washed the fleece today, it looks fantastic! I also tried something new with the hay bin thing, I used a shoe box and cut a hole in it so they can crawl in it to eat hay, it holds the hay really well, and my guinea pigs haven't chewed on it yet, so that's a good sign.
Before I washed the fleece and changed the layout a litte:
After I washed the fleece and changed the layout of the cage:
I wash the fleece every 2 weeks, but this time it looks soooooo good!
The cage looks a lot better now, I love it. (:
Sorry the pictures are sideways. D: