Bark is a great addition to soil for adding aeration and to encourage drainage. It also works great as a top dressing to prevent mold in humid environments.
Pre-bagged bark comes in a resealable bag.
If you are shopping in-store you can buy bark by the scoop (1 L per scoop) and take them home in your own reusable container.
Bring your own container to fill and save 10% on all soil bar products.