Chewies Grapevines chewing sticks and bulbs come from natural prunings from German wine-growing regions. In order to facilitate a good grip, the robust wood is merely cleaned, debarked roughly and then sanded. This makes it attractive and lasting chewing fun for our four-legged friends - completely without calories and free of any additives. Pets Nature also offers the popular Chewies Grapevines as a private label, so that customers can use the product for their success. www.petsnature.de