Routine dental care is truly the best way to help treat, and prevent doggie breath. Home brushing is helpful, even if you only brush twice a week. It is the mechanical, massaging motion of the toothbrush on the gums that is the most important. Eating dry food is healthier for the teeth, canned food is stickier and stay on/in the teeth longer, causing a build up of food that bacteria feed upon. Feeding your pet meals rather than free choice also prevents plaque and bacterial build up.