At Oxbow Animal Health, our purpose is to help people and pets live happy, healthy lives. For more than 30 years, we've partnered with leading veterinarians and nutritionists to develop nutrition and care products that meet the specific species and life stage needs of rabbits, guinea pigs, chinchillas, hamsters, gerbils, rats, and mice. From farm fresh hays and nourishing fortified foods to wholesome treats, beneficial supplements, enrichment and care, Oxbow products are used and recommended by leading veterinary professionals and passionate pet parents worldwide. Oxbow's Essentials - Hamster & Gerbil Food is formulated with the guidance of top exotics veterinarians to meet your pet hamster or gerbil's unique nutritional needs. We combine hand-selected Timothy Hay with wholesome barley and oats to provide vital nutrients that support daily function and performance in hamsters and gerbils. FEEDING INSTRUCTIONS: Young (under six months) or Pregnant / Nursing Small Hamster or Gerbil/Large Hamster: Unlimited Adult (over six months) Small Hamster: 1/8 cup Adult (over six months) Gerbil/Large Hamster: 1/3 cup. While hamsters and gerbils don't require hay as a staple in their diet, be sure to offer them free choice hay to burrow and hide in. Please note that these are guidelines.