When first got my hedgehog I used corncob. It was great but there was problems with mold and mildew whenever it got wet. Also corncob is very rough and unpleasant(like little stones). I highly recommend in a simple fleece liner! Just got to your local fabric store or any fabric provider and get a few pieces of fleece the size (or a little bigger to cover the walls) of the cage. Its also really great because there isn’t any problems with allergy’s. Its very comfy for your little hedgie to sleep and play on. Also it makes the cage feel a little bigger! When its time to clean the cage you just simply take the fleece outside and shake off any feces or invest in a poop scoop and just scoop the feces off the fleece! Make sure afterwards you throw it in the washing machine to clean out any pee. But make sure you use a laundry detergent that doesn’t have a strong smell to it, that could cause an allergy issue. Lastly don’t ever use a towel o anything that has loops or little thing the hedgie could get their nails caught on! Oh and its really fun to get different patterns on the fleece!