Vitamin rich fruits, vegetables & nuts. Hartz Nutrition Bonanza Guinea Pig Gourmet Diet is the ultimate guinea pig diet. Using our extensive knowledge of small animal care development from years of research, we have created Hartz Nutrition Bonanza Guinea Pig Gourmet Diet. Hartz Nutrition Bonanza Guinea Pig Gourmet Diet is a nutritious blend of tasty, wholesome ingredients, including quality grains, seeds, fruits and vegetables. Vitamin and mineral enriched pellets are also added to keep teeth fit and satisfies your pet's need to chew. Importantly, it contains essential Vitamin C to help keep your guinea pig healthy and help protect it against disease. Reward your pet with this highly palatable gourmet diet of carefully selected ingredients.