Greetings all, Regarding cat litter, I use Cat's Pride. I have not had any problems for over 6 years. I even use the fresh scent (Blue package)! The type of cat litter that clumps 2gether sounds like a bad deal for a ferret. I do not recommend newspaper unless you are going to remove promptly after use. Ferret urine stinks!! -=> Art Grondine & Guy Ferret [Posted in FML issue 0674]