Welcome to fresher breathe & cleaner teeth! Simply Seaweed is dried and crushed Ascophyllum nodosum (a particular species of seaweed).It can be used by both dogs and cats as a dietary supplement and has been proven to improve dental hygiene, click here for clinical study links! Simply add the recommended dose to their meals daily.Ascophyllum nodosum, a species to kelp, helps to keep your pet’s teeth clean and reduce bad breath in a natural way - whilst kelp is a natural superfood for dogs and cats due to its abundance of vitamins, minerals, amino acids and antioxidants.Ascophyllum nodosum works systemically through the bloodstream and thus does not need to come into contact with the teeth (or mouth).