Close A team of scientists from the University of Arizona believed to have found the cure for the dog's bad breath that can sometimes be worse than their bite. They developed a new harmless bacteria strain that eliminates the foul smell of the dog's breath for up to two hours. It is far from traditional means of eliminating halitosis in dogs that include using toothpaste and chew treats that only cover up the smell with other scents. The new bacteria strain is harmless and can completely eradicate the foul smell when added to the formula of dog food and treats. It is still in the developmental phase, but scientists are improving its duration and efficacy to make it last for up to eight or 12 hours.