Regular clay cat litter is not recommended either because it tends to dry out the ferrets feet and coat. Some ferrets like to play in their litter, if this is the case, the recycled paper litter is safest for the eyes and nose, and is less messy. You reward them either verbally or with a treat when they use the box, and send them to their cage if they have an accident. You must have a cage with a litter box inside to start. Show the ferret the box.
Most ferrets go to the box immediately in the cage.
If they go on the cage, scoop up the feces, put it in the box , put the box over the spot where the ferret went and show the ferret the feces in the box. This normally does the trick. This is done to remind the ferret to relieve itself in the box, and even though it is excited about being out, it must remember to go back to the cage. This is where you need to help it remember. When the ferret goes, a treat will help the process.