To use this Versele - Laga rat food, simply fill your rat's food bowl with an appropriate amount according to its size and age. For young or small rats, start with a smaller portion and adjust as needed. Make sure fresh water is always available. Keep the food in a cool, dry place to maintain its freshness. Check the food regularly for any signs of spoilage. If you notice your rat is not eating well or has any health issues, consult a veterinarian.