After a year and a half of washing a combination of fleece, towels, incontinence bed pads, vetbed (almost every day!) I have as of yesterday started using using doggy puppy pads (to protect the cage bottom), a thick layer of newspaper, a layer of dust free horse litter with loads of hay on top, and so far I love it! I could not leave mine more than 24 hours on fleece it got very damp and smelly and the towels were soaked in a couple of places - when I get home after being out at work 11 hours the poo levels were ridiculous. I also had 2 large litter trays stuffed with hay with the fleece set up which got changed completely daily also but this didnt help the situation! Mind you, it was fine when I had 2 girls but when I got a boy and now all 3 are together, I gave up! I still have a bit of fleece and vetbed on the top level of the cage
I will still be changing the hay and most the litter every day but it will save me a fortune in electricity, washing tablets and expensive oxy action extra hygene stuff!