All natural and completely digestible, Cerea Sea Algea Toothbrushes are a healthy vegetable and algae-based dog chews which have a minimal fat content. Algae contain a high concentration of chlorophyll, proteins, iron, Omega 3 and Omega 6 fatty acids and a rich source of vitamins. These fatty acids have a positive effect on the cardiovascular system. Green algae promote healthy digestion. The antioxidants protect the body against stress and premature ageing. Just like all the Antos Cerea products we sell, these Cerea Sea Algae Toothbrush Chews also contributes to dental care for dogs. The treats are made in The Netherlands for a Scottish Company, in a factory where all heat from manufacture is recycled and used to heat the building! Both the Scottish retailer, and the Dutch manufacturer recycle extensively. All in all, its pretty ethical!