Abstract: A food-grade, all-natural cold storage anti-bacterial filter is disclosed. The filter may control moisture, gaseous contaminates, mold, and bacteria within a cold storage unit; improve food safety; and improve the life of cold storage equipment. Reduced food spoilage, reduced energy usage, and increased cold storage shelf life may result from use of the filter. The filter includes a mixture of effective amounts of a base mineral, hygroscopic plant botanicals, and anti-bacterial plant botanicals, wherein the mixture is disposed in an FDA-approved food grade material.