Oxygen absorbers are essential when packing away emergency food on your own. When I first started collecting food for our emergency storage, I took all the food out of their packages and stored them in plastic bags, and then into bigger containers. While this works with dry food such as pasta, it doesn't work with other foods. One time, I must have spent a good 100 dollars on containers of nuts, and transferred them into a 5 gallon metal container. Thinking they would be safe from bugs, I didn't factor in the oxygen. Oxygen absorbers are made of the active ingredient of which is a powdered iron oxide, and are completely safe for food. While they are not edible, they are not toxic, because no harmful gases are created and in addition the oxygen does not remove the fresh smell and taste of the product. When used with proper packaging and sealing, the oxygen in the packaging is greatly reduced. These (Read More....)