Kitchen Tips Does baking soda need to be airtight? March 2, 2026 by Tanp | Leave a Comment Baking soda does not strictly need to be stored in an airtight container, but doing so significantly extends its freshness and effectiveness. While it won’t spoil in the traditional sense, it can absorb odors and moisture from the air, diminishing its leavening power and making it less useful for cleaning or deodorizing. Therefore, an airtight […] Read more ยป