Rowan Sanderson sits down with David Levy from TEEF! Health. Their titular product, TEEF! is a “prebiotic powder made out of four natural safe ingredients”. The powder is added to a dog’s water. Once the dog drinks it, TEEF! slushes within the dog’s mouth, overtaking the bad bacteria as the prebiotic grows and helps to enhance the good bacteria. Not only does this clean the dog’s teeth, but the good bacteria then goes down into the intestinal tract and helps the probiotics.