Petface Doggie Bistro Sweet Potato Chicken Twist Sticks 5 Pack. Reward your pooch with a tasty little treat with the Petface Doggie Bistro Sweet Potato Chicken Twist Sticks. Made from a completely edible vegetable based chew strip, the Sweet Potato Chicken Twist Sticks contains no indigestible rawhide and has been made with a combination of prime chicken meat and vegetable matter including sweet potato and peas to ensure your four legged friends will be howling for more. To ensure complete freshness, the sealed packet includes a oxygen absorbing sachet to ensure optimum freshness and a delectable flavour.