Sentry HC Petrodex Ultra Advanced Veterinary Cleaning Paste uses techniques developed for human dental care to resolve obstacles in pet dental care. This easy to apply paste helps to weaken and break down plaque and tartar deposits. This causes the tartar to break away from the pet's teeth over time, visual results have been seen in as little as 10 days. Chewing action such as gnawing on a bone, a dental toy or playing with a "tug" type toy helps to speed up break away of the tartar that has been weakened. A unique feature of Petrodex Ultra Advanced Vet Cleaning Paste is its ability t adhere to the teeth and gums for an extended period of time giving it powerful residual action.