Never have I been so in awe or a product than this CatGenie. I discovered it last March (2011) on a friend's recommendation; it 's fabulous! I have 1 cat, 10 lbs, only took her 1 day to get used to it. I set it up in Master bathroom and flowing into the toilet but the toilet seat wouldn't close all the way down on the hose without flattening it. I moved it to my laundry room and it only took her 1/2 a day to get used to it. She likes to watch the cleaning cycle, especially the bowl rotate-just like in the commercial. She won't use Genie while the dome is on top, but...funny! She sleeps inside the dome if I put it on the carpeted floor while I'm doing laundry or ironing. We are both so happy with the purchase, I've recommended to everybody I know, and even those I just strike up a conversation with about cats. Don't know how I could do without it! PS: putting it on "CatActivation" really conserves the solution.