I tried a used Cat Genie and got hooked! With 4 cats it is a great time saver & has eliminated cat box odors. All cats started using it right away, I think they like it, too. I bought a brand new Cat Genie for my parents, who are 88 & 90 & starting to have difficulty bending down to clean the litter box. I am remodeling a house which will have a cat room with plumbing for the Cat Genie built in to it!