Nylabone Dental Heart Edible Dog Chews, Advanced Oral Care, 14 Count, 6 Pack Clinically proven to reduce plaque that harbors bacteria and thus reducing the risk of developing oral diseases. A daily routine of proper pet dental care may extend the life of pets as they are less likely to develop a mouth related disease. Chlorophyll freshens breath and chewing action helps clean teeth. Fortified with natural vitamins and minerals. Made in the USA!