I use carefresh bedding. I get the really big bag from petco for around $20 and it lasts about 3.5 weeks. When my moms start to 'golfball', i put a bunch of strips of newspaper in the enclosure so that they have something to build a nest out of. Also, I use old boxes from around the house as hides....so I can just throw them out after they have been used for a week or two...the one in the pic was a snack bar box...ha ha.