Vitamin & mineral fortified. With omega-6 fatty acids. A fun and healthy way to add variety to your pet's diet. Hartz Bonanza Treat Sticks are full of tasty fruits, vegetables, seeds and grains that your pet will love. This healthy snack, specifically formulated for guinea pigs, is fortified with vitamins, minerals, antioxidants and omega-6 fatty acids to help maintain optimum health and vitality.