Kitty's WonderBox Disposable Litter Box Will not leak, tear, or shred Functions as odor control, litter box liner, and disposable litter box Provides enhanced airflow that controls odors Made from 100% biodegradeable, recycled paper 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 Fits standard litter boxes