Our cat flips it in the air, catches it with it's paws and scratches it with it's hind legs! My aunt wanted a couple of these when she saw our 14 year old cat who couldn't be bothered to play with feathers, mice or pom poms before play with one of these mice. The best thing is these are catnipfree! So it's the kitty who's really interested in playing.
I sell some at our local pet shop and they seem to become a hit because I've already got a few orders. I recently started selling these on etsy too :)
I made my own pattern altering the pattern available on youtube by tjw1963