Fleece is a very good choice. You need 1-2 layers of pre-washed fleece so it can wick and about 2-3 or more layers of towel. You'll need to sweep the poops 1-2 or 3 times a day, and change it probably about every 5 days depending how big your cage is and how many pigs. (The bigger it is, the longer between washes). I have 2 pigs and a 2x6 cage and I can get away with changing fleece once a week. Fleece is a good choice as it remains dry and soft. You don't have to continuously go out and buy more bedding. It's not messy. Don't wash the fleece with any detergent containing fabric softeners. Good luck.