Steel ammo cans are great cause you can stack 'em deep. Seals do fail, but a good greasing will make them last a long time. Dessicant packs are easy to find, cheap to make. We keep a big one int he safe that has color changing crystals in it to tell us when it's sucked up all it can. Works a treat.
Steel cans don't get brittle in cold or sun, but can corrode if left on a damp floor.
Steel cans don't get brittle in cold or sun, but can corrode if left on a damp floor.