Recently purchased, basically brand new litter robot 4. Mint condition and works great, my cat is way way to skiddish to go in an enclosed litter box and after a week of attempting, it was not going to work. The app is amazing and lets you know the weight of the cat, when they go in, and you can do manual cycles as well. Amazing if you have to monitor for health reasons! It also comes with a pack of 6 deodorizer’s. Love this product but if you have a cat that is afraid of enclosed spaces this will not be for you.