It's important to let your cat adjust to the presence of a new litter box before operating it, because even the quietest automatic litter boxes have moving parts that could frighten your cat. Begin with your new litter box in the same room as your existing litter box, leaving it unplugged at first. While you won't be operating the automatic features yet, go ahead and fill it with litter, encouraging your cat to check out the familiar scent. Once your cat has adjusted to the presence of the new device, begin running a cleaning cycle two or three times a day, preferably at the same times. Let your cat begin to get used to it as part of their daily routine. Be sure to encourage your cats with praise, snacks, or play after you see them use the new, automatic litter box. If your cat isn't using the new litter box, you can try sprinkling a little catnip inside the automatic box. There's also training litter, designed to attract reluctant cats. Once you see your cats using the automatic litter box, wait at least a week before removing your cat's existing litter box.