I have two indoor cats; I have owned my cat genie for about eighteen months. I HATE cleaning a litter box, now my cats' litter box cleans itself! The unit is wonderful. I use the cat activation mode; the cat genie does all the work. The cost for the sanitary and cleaning solutions is actually a bit less than what I was paying for the premium clumping cat litter before. My cats love the cat genie too; they both like to watch the cleaning process. They had no issues in switching over from their old litter box to the cat genie. What a wonderful product! I did purchase the dome after a few weeks because my cats were making a mess with their exuberant digging; the litter was getting tossed out onto my bathroom floor. The dome is a must in my opinion, buy the tuxedo package. The few times I have had to call customer service they have been extremely helpful. I would like to say thank you to the makers of cat genie and to their excellent customer support team.