Yes, I put a folded paper towel underneath the wheel, that catches most of the poop and pee, so the liner last longer. You can spot clean each night if poop gets on the liner, and I also scrape up the mess Lily makes from eating (all the crumbs). I usually get about three nights out of a liner before switching it for a clean one.
Liners can be really simple, you can just get either a couple of yards of fleece from a fabric store, or you can buy a fleece blanket at a store like Walmart. Then you just get the measurements of your cage and cut the fleece to the measurements. I got a full size fleece blanket and got 10 liners out of it, I think. Because it doesn't unravel, you just put it in the cage and you're all set. If you get a blanket, though, be sure you don't use the edges where they may have decorative stitching, which can catch hedgie toes and nails. Also, light colored liners are nice because you can see strange colored wastes better (blood in pee/poop, green poop, etc.)