Extremely popular!
One of my cats has a dodgy tummy, so he can't eat any normal treats, but he gets jealous if the other cats have something when he can't. He loves these treats - he meows and squeaks and gets so excited when he knows it's 'that time of day' (just before his dinner). Strangely, he doesn't actually like chicken, but he'll eat as many of the Thrive chicken bits as I'll give him. Expensive, but I know they won't upset his stomach and they make him happy so, obviously, it's worth it!