For dogs from 11kg - 23kg. Dental disease is a common problem in dogs. It starts with bacteria attaching to the teeth forming plaque. Plaque can then harden, forming tartar. Bacteria can also lead to bad breath. The scrubbing action of the chew reduces plaque and tartar build-up resulting in cleaner teeth. The delmopinol in the Oravet chew then forms a barrier to help protect against the bacteria that leads to plaque and calculus build-up for a cleaner mouth and fresher breath. The dual-action approach of Oravet Chews doesn't just clean teeth and freshen breath. It creates a barrier to protect against plaque, calculus, and bad breath.