I didnt even know they had liners for the trays in the FN cage. It gets wiped out everyday if need be, but i disinfect the trays on the weekend. All three of them use the girly room, so all thats ever is laying around is the occasional pieces of bedding & food. What do the liners look like? You use them all the time?
I don't think there are official FN liners; we all just use towels or fleece and clip them down. My boys kinda have the idea of the litterbox, but I still have to spot clean every darn day, and the towels just make it easier with the scent marking and the rattie urine trail.
I would surely go without them if it just wasn't so loud when they ran around on it. The cage is at the foot of my bed and towels really hush the noise.
omgoodness! if it was at the end of my bed, i think id have towels down too. I keep my cage downstairs and we really dont ever hear them at night. I had them in my room, but my husband couldnt sleep when they ran their marathons on the wheel. Hence the reason I got the new cage.