Five years ago I bought this product and it is the best product I have ever bought...EVER! Set up was very easy, the fresh scent cartridges seem to last for such a long time, and there is no litter to scoop, no daily worries about smelly cat boxes, and to litter footprints tracked all over the house. The assembly was simple, the instruction book is step by step with a troubleshooting section for every error imaginable. I have had three cats, they all adapted to this new box easily, after a period of time of simply watching and being mesmerized by the actions of this invention. It is amazing. Whoever created this is a genius. Guests in my home have been intrigued by the entire process and system of this working miracle.
If you have a cat, purchase this...you will be so delighted and totally appreciative of the difference this will make in your life and the life of your cat.