What I do not understand, in turn, are the bad reviews. Of course, cats lose collars, so it is supposed to be, ultimately, before they strangle themselves in the undergrowth. But I buy collars with safety closure! If I do not want that, there are plenty of other options. And cruelty ??? What kind of mischief. My five get even each mouse and unfortunately now and then a careless bird despite bells. Moreover, they are the whole day very relaxed. You make the bells from nothing. The hunter can even heard the ringing from the other very well distinguish "wild game" and do not shoot. That makes me feel secure and my cats.