Clancy, my Scottish Terrier, is too skittish to allow me to brush his teeth, and because of his liver problems, cannot be put under anesthesia to receive professional dental care. His breath was becoming foul and I felt it would just get worse. Then my vet introduced me to Perio Support, and it seemed to work like magic. The foul breath is gone, and all accomplished by sprinkling this product on his food daily. Perio Support is a real winner.