Frontier Pets food boasts an impressive shelf life! Unopened bags stay fresh for up to 2 years thanks to a clever freeze-drying process that removes most of the moisture, creating an inhospitable environment for bacteria growth. This makes it a convenient option for pet owners to be able to feed raw. Once you open the bag, maintain freshness by keeping it in it's original packaging (seal after each use) where it will last up to 3 months.