My dog loves the sticks. However, I haven't noticed any difference in her teeth in comparison to giving her other crunchy treats to chew on. I also haven't noticed any change in the freshness of her breath.
This is by far my favorite workout series ever. If you're just starting out, you can do things at a lower intensity or you can go crazy! Chalene is so motivating. It's like she knows exactly when you're getting tired and she'll pump you up. I definitely recommend this to anyone who wants a great cardio workout.