Kitty's Wonderbox for Ferret-Single Will not leak, tear or shred like other disposable trays Fill with your current litter, scoop, refill and reuse; lasts up to 4-weeks Superior odor control; cleaner than a regular litter box; air filtration system controls tough cat box odor; paper's ph helps neutralize ammonia odor Eliminates the need for disinfectants, makes disposal and clean up easy Designed just for ferrets