I have three cats and have used several automatic and even regular litter boxes and they were just a hassle. Now upon getting this i had to do special plumbing as I live in a trailer but once hooked up the cat genie was an amazing buy. It has been running strong and keeps our house smelling fresh. Did end up buying the sidewalls for this and top for this as well. My cats took to it quickly minus one of them which she isn't the brightest but she's now using it. Have only had one time where the box didn't get all the cat poop and it did make the house smell but since then no issues whatsoever. Haven't had to scoop any poop and i would never imagine going back to old litter boxes. The granules do end up everywhere both by the box and the cats but using a rubber mat this help keep the tracking way down. This litter box may be "expensive" compared to the 20 dollar box at the big stores, or even more expensive then the 120 dollar electric little box but know that it isn't worth the hassle or the smells you get from these other boxes and you don't have to change out pads. heck the 2 year warranty is better than most other companies even and i have mine hooked up to the toilet simple flush here and there through the day and the mess is cleaned up. Again worth every penny I've spent and I have suggested it to my mother who has 2 cats of her own.