Works much better on hard floors!
We first put this down in a carpeted room and it just juddered about a bit. I wasn't impressed and my kitten was only vaguely interested. Next day I just happened to put it on in the hall, where we have a wooden floor, and it was vastly better!! Moved around much faster and much further. 5 month kitten doesn't know what to make of it but is interested and stalks it. I leave it on for 2 or 3 mins each time and it intrigues her. It is quite noisy but fun for her and quite amusing for me too! :)