The Mylar bags from Wallaby block light, moisture, and oxygen from reaching the food inside. This prevents spoilage, mold, insects, and rodents from ruining your food supply. Here are some steps to follow for DIY food storage using Wallaby’s Mylar bags: Choose the Right Size and Type of Mylar Bag, Choose the Right Type of Food to Store, Add Oxygen Absorbers to the Mylar Bags, Fill the Mylar Bags with Food and Seal Them, and Label and Storethe Mylar Bags in a Cool, Dark, and Dry Place.