Bluestem Oral Care water additive (with coactiv+) is scientifically-formulated to freshen breath, help fight plaque & tartar, and promote good oral hygiene. It's easy to use - just add 2 capfuls to 600ml of your pet's drinking water (1 capful is 10ml). Use daily for best results. Contains coactiv+™ technology - a unique formulation of food-grade ingredients that are scientifically developed to break down biofilm, where harmful bacteria multiply. Clinically proven safe and effective for daily use in cats and dogs.