Self-cleaning litterbox

I just bought one of those self-cleaning litterboxes. One of my cats is completely fascinated by it. She watches it clean out the dirty spots. I heard it running last night, and I think she has figured out how to make it go. Anyone else have this happen? It's run a few times this evening, and I don't think it was used each time.:tounge2:

Not practical if you have a lot of cats, the poor motor kept burning out from over-use! LOL But Kahuna was fascinated with the sound and kept trying to chase the scooper when it was going

I have only two cats right now, and when I have a litter, I give them their own baby sized litter box. I am thrilled with it. I had the small one and my two outgrew it. Now I have the big one, and it saves me so much work. The kittens will get tired of watching it go!
(Eventually!) (I hope!) My two have been using the big one for over a year, and so far, so good.