I got these for my 2 new greyhounds that have taken a liking to eating my kids plastic toys. Every other chew toy that they liked (edible ones) they would destroy/eat within minutes. Any of the completely non-edible ones (like Nylabones) they lost interest in pretty quickly. These are the perfect balance! Two WEEKS later and my dogs are still enjoying them, with around HALF of the edible part still intact. The non-edible part doesn't break off so no choking hazard. It does come off in itty bitty slive..
This is the one toy/treat I always keep on hand for my 9-month-old cockapoo. He gets most of the treat out the first day but keeps working at it for weeks. He almost always chooses these over any other toy.