I am a happy owner of our Litter-Robot for 7 years now. I originally purchased it for my tuxedo Phoebe who was fighting Chronic Renal Failure. With that condition she would pee huge clumps that were too heavy for the previous automatic litter box that I had to lift and dump. Litter-Robot saved the day and easily kept her litter box clean and clump free.! That was 7 years ago and since then Phoebe lost her fight with CRF 🙁 Since then the Litter-Robot continues to serve our two cats Brandy and Shadow without skipping a beat. The only time that a part wore out, your customer service was superb in sending and instructing me how to repair…..and very quickly too ! Thank you for a great product and even better people to work with !