DogH2O and CatH2O dental care tablets DogH2O and CatH2O dental care tablets provide daily care for dental hygiene simply by drinking water. They also fight bad breath and effectively protect against calculus and tartar, for healthier gums. It contains calcium for healthier and stronger teeth Each package contains 8 tablets. Each tablet lasts about 4 days when used with DogH2O and CatH2O water fountains. Designed and manufactured in Australia They dissolve slowly in drinking water