YES! i use profleece (
www.profleece.co.uk) and fleece blankets. I make them myself too to fit cage sizes. I use a number of linings to allow absorbency.
Use newspaper under the fleeces, it absorbs it and the fleece stays dry on top.
Mainly my cage is covered in profleece, had fleecing blankets in areas and newspaper, carefresh and the hay in upper levels!
its much better than sawdust/woodshavings too, and less messy
one of my is allergic to shavings anyway so cant use them. Its so much less mess with fleece too, just wash once or twice a week, depending on how messy your pigs are (i clean wee and poo areas every other day with fresh newspaper and hay, this is in a litter tray and higher level) and hoover out twice a day for their poos and odd bits.