After having to unexpectedly foster 2 cats, I quickly discovered life scooping & smelling kitty poopie without having this game changing 'Smart Litterbox' device was akin to living in the dark ages. I, nor my new fury feline friends, shall ever be without one! Within 5 minutes of its set-up, both cats took turns using it. I don't know how they understood its purpose, but they did. Perhaps the kitty litter inside was the lure. With 2 cats the waste catch pan needs to be emptied every week, as these cats are full of it. Thus, in addition to the Smart litter box (essential oil) cube an adjunct plug-in wall air freshener is needed. Cleaning the contraption is fairly easy, being specific to instructions (can't get electronic base wet). Cats paws do scatter litter upon existing, 
a small rug placed below entrance door is my solution. Overall, this purchase was well worth it.