Kong dog toys make great dog chews with added fun! Some dogs love to chew and will chew things just for something to do and having a kong toy on hand to occupy them is a good idea. You can add peanut butter inside the Kong and it will keep them busy trying to get the treat out of it. It provides hours of fun and the dogs don't ever get sick of playing with it and chewing on it. They are made of super durable rubber. They are pretty close to indestructible. They withstand hours and hours of rough play without falling apart and puppies sharp teeth are no match for Kong. I used to buy nylabones but my dogs seem to use the Kong a lot more. I know with my dogs they love anything new they get for a little while and then they kind of get sick of it and stop playing with it. The Kong has really kept My dogs intrest and I think it's because of the added treat inside. My border collie thinks that she was put on this earth to destroy any and everything in get path. She has destroyed many a door and window from her incessant chewing and most toys hold no interest with her but even she loves Kong toys. I don't know about the breath freshening but I can say that the kongs must clean there teeth because of the rubber dragging across the teeth so much as they chew and lick. Its a long lasting toy that will definitely provide lots of fun. They are available at most pet care supply stores. They are a bit expensive, but it's worth it for how long lasting they are. They are a much safer alternative to rawhides or bones. No worry about them choking or swallowing none splinters. Check the Kong for damages before use and it's pretty safe. I think most dogs will love it and it should clean the teeth if they chew on it. I would recommend it to dogs who are energetic or dogs who love to chew. It works great for my dog who looses interest very quickly in toys so if and when she wears hers out I will definitely go out and purchase another for her.