100% safe and effective, food grade nitrogen. Control moisture and humidity, eliminate mold, bacteria and bug/mite infestation. Great for short or long term storage as well as all your edibles. Our .25 oz. can equals approximately 100 applications. Attached, fold-down, stainless steel straw helps reduce cross contamination between uses. Available in 2, 4, 6 and 12 packs to save even more!