While this is an expensive purchase, my fiance and I feel like it was well worth it. We've had the catgenie for over a year and have had minimal problems with it. It's so fantastic with our busy schedules not to have to worry about keeping the litter box clean. Our cats acclimated quickly to the catgenie and seem to like it better since it's always clean. I had a problem with one of the parts, but customer service is great and helped us figure out the issue. We compared the scent to scent free cartridges and I personally hated the scented. We don't like that the granules get tracked everywhere, but I feel like the convenience makes it worth it. I would not recommend the cat genie if you have to put it near an area that you don't want to smell it occasionally. Every once in a while it gives off a terrible odor. We solved the problem by putting a cat door to our laundry room so we don't have to leave the door open. That fixed the problem! Overall, if you don't want to worry about scooping poop, buy this.