Furthermore, crucial for this type of food is that it should be given constantly. Hay should be always available to little animals since it guarantees that chewing is a continuous activity. Constant chewing on hay fibres helps the animals' teeth naturally and healthily wear down, therefore reducing dental issues.
https://romanbryana.bcz.com/2024/09/24/the-role-of-timothy-hay-in-preventing-dental-problems-in-small-animals/