Here's why:
* They use special materials: Cat food bags are made of materials like foil or multiple layers of plastic, which create a barrier against oxygen and moisture.
* They have a zipper closure: Many bags have a zipper-like seal, which helps to create a tight closure and prevent air from getting in.
* They are usually vacuum-sealed: The manufacturing process often involves removing air from the bag before sealing it.
However, over time, some air can still seep in. This is especially true if the bag is not properly closed or if it gets damaged.
To keep your cat food as fresh as possible:
* Store the bag in a cool, dry place.
* Always close the bag tightly after each use.
* Transfer the food to an airtight container after opening the bag. This is especially important if you live in a humid climate or if you keep the bag open for an extended period.
* Follow the expiration date on the bag.
While cat food bags are not completely airtight, they are designed to preserve the food for a good amount of time. By following the tips above, you can help to keep your cat's food fresh and nutritious.