Have you ever leaned in to kiss your dog and just can't because of the horrific bad breath? Dogs tend to have bad breath caused by an unhealthy gut or digestive system. So I found a solution. Chicken egg shells. Save the shells from a few eggs. Rinse them or just bake them till dry not sticky. Place shells into a designated coffee grind or blender. Finely crush into a powder. This powder is what you want to sprinkle just a teaspoon for small dogs works. Use more for bigger dogs. My research tells that the calcium and other minerals causes a change in the gut health and rids your dog of bad breath odors. This is even safe to use for cats. Thanks for listening and message for any questions.