This is my second one. I will always use the self cleaning litter box. It is healthier for your cat(s), easier on me and keeps your home cleaner. I live in an apartment and my manager complemented me on how "well I care for my cats". My vet says my 14 year old cat looks 7 and I firmly believe this litter maid has something to do with it. He has had the litter main most of his life. My "skid-dish" cat, he uses all the time but waits to see it move, kind of funny. All I know is when this one goes, I will buy a new one again. These are worth every penny I spend to have another day with my cats.