Clinical trials have shown that using HealthyMouthTM alone reduces plaque by 71.9 percent and 76.7 percent effective in two clinical trials. If you also want to give your dog a bone to chew on, do it. According to the American Kennel Club Canine Health Foundation, while most pet owners understand the importance of having a healthy mouth for them, two-thirds of dog owners neglect the dental hygiene of their pets.