This item works with crystal litter that dries out feces and absorbs the urine. Then a rake on an automatic timer removes the waste in the disposable tray and places it in the closed compartment for easy clean-up. Probably one of the best automatic cat litter boxes out there, it https://cat-litter-automatic87653.ssnblog.com/35836134/the-basic-principles-of-auto-cat-litter-cleaner