Parrots must grind their teeth, and special molar stone materials can be provided to promote parrots to grind their teeth. This product is made from natural volcanic stone, without any additives, fluorescent agents, and no artificial ingredients. The star-shaped design of the stone makes it easy for parrots to trim and clean their beak. Colorful beads between lava stones and the bell on the bottom attract the parrot's attention, reduce loneliness, good for the parrot's psychological wellness