Double-sided tooth scraper
Scraping tartar is a safe and effective method for removing tartar of your dogs teeth. The glaze is stronger than the tooth scraper itself, so you will not damage it very quickly.
However, do not scrape to the gums. Tartar leads to painful inflammations; that is why it is important to keep your dog's teeth tartar free. If your dog's teeth are inflamed, be sure to consult your vet!