This litter box has been a total game-changer for us. With three cats in the house, the litterbox was quickly becoming everyone's most hated chore. This litterbox has nearly completely eliminated that for everyone. They work so well and keep odor totally under control - we even have one in our bedroom and it goes unnoticed. Cannot recommend these more highly. Pair them with a subscribe and save shipment of the trays from your favorite retailer and all of the effort and thinking about litterboxes is in the past!