Oxyfresh’s Cat Dental Water Additive is a no-brush cat breath freshener that makes teeth cleaning easy. All owners do is add one capful of the tasteless and odorless water solution to their cat’s water bowl each day. It doesn’t just mask bad breath—it neutralizes it completely with the company’s exclusive ingredient, Oxygene, plus zinc. Safe, gentle and nontoxic, Oxygene neutralizes bacteria and cat bad breath right at the source. The product does not contain harmful mint, alcohol, masking agents, tea tree or clove oils.