Oils, fats, and steel all decompose when in contact O2. If you store any of those items use an O2 absorber.
Grains, pastas, fruits, nuts all decompose from mold; which is due to moisture. If you store any of these items use desiccant. To keep them dry.

Grains, pastas, fruits, nuts all decompose from mold; which is due to moisture. If you store any of these items use desiccant. To keep them dry.