Excellent, with brushing only 3 times a week. Very good results. It does not create problems in the dog's digestive system. He really likes the mint flavor.

The ingredients are controversial, and it does not have an expiration date. I bought it to use once a week, and for the rest of the days, I use pure virgin coconut oil for brushing my teeth. Coconut oil contains lauric acid, which helps fight dental plaque.