Moisture absorbing packets that guard dry goods against damp inside a sealed container. They solve a different problem than oxygen absorbers, and they do not replace them.
- Know the difference before you buy. Desiccant pulls moisture, oxygen absorbers pull oxygen, and using one where you needed the other is the most common mix-up in food storage.
- Silica gel is the standard. Indicating silica changes color as it saturates, which tells you when it is spent rather than leaving you guessing.
- Buy the rechargeable kind. Most silica gel dries out in a low oven, which makes it close to a one-time purchase.
- Do not lean on desiccant as the primary defense for long-term staples. Properly dried food sealed in mylar with an absorber does not need it.
- Reach for it where sealing happens in humid conditions, or inside jars and ammo cans where a little trapped moisture has nowhere to go.
