It makes a major difference where you live. I have to store it in a dehumidified gun safe here in AR, when I lived in Northern IL it was no problem. Some places are naturally dryer than others where it gets cold enough to freeze some of the humidity out of the air that helps where you have 80 or 90 percent humidity all year it takes some care. A few of the dehumidifying packets bake in the oven and put in with the powder and a dehumidified area with do the job anywhere. Lee