Bluestem Oral Care Original Flavor Water Additive for Cats & Dogs. Bluestem™ oral care water additive with coactiv+™ is scientifically formulated to freshen breath, fight plaque and tartar, and promote good oral hygiene. In an independent, Good Clinical Practice Efficacy study, dogs were given bluestem™ water additive in their daily drinking water, and by 84 days showed a 25.4% reduction in tartar – without even brushing! Bluestem™ Original and Chicken flavours are formulated for daily use for all sizes and breeds of cats and dogs. Fights plaque and tartar Freshens breath and improves oral hygiene Original and chicken flavors available for dogs and cats Vanilla mint flavor available for dogs only Safe for daily use in all breeds and sizes Does not foam or cause slimy residue in your pet’s water bowl Can be used in most water fountains Made in Canada Available Size: 500 ml