Bought this as a gift for my teenage nephew whose suppose to be in charge in making sure the litter boxes are clean, but is a teenager... It was super easy to put together and get link his phone to the app. We put the old litter box next to the new one and the cats started using the new one right away. I have two of the Whisker litter robot 3s for my own cats and this one is quieter and I kind of like the simplicity more. Also it's cheaper.