I have a whole bag of those little desiccant packs for small containers. I will do that. I use thick 4 mil Ziploc bags for ammo storage to increase each ammo can capacity. I use one of those per 100 round baggie. Jus for insurance. I use the plastic ammo cans with rubber seal with a big one in there. So the ammo it triple protected. OCD is hell!One bit of advice I did get from an old guy I was talking to - as soon as you break the seal on a jug or jar of powder, drop in a silica gel bag.
Quick and easy way to cut down on humidity, which is the second biggest enemy after temperature.