My 9 month old kitten Jingle absolutely LOVES these moths! He's crazy about chasing and catching it, and sometimes we let him carry it around on his own.
However, be cautious when leaving some cats unsupervised with these lures. Usually you can tell within a week if a cat is only interested in chasing and swatting, but I have a cat who was feral who seems to think it's a real little animal and tries to eat it. Make sure it's the right toy for your cat!