It has gotten pretty hard for me to find black powder lately so I'm thinking about keeping 3 or 4 pounds of 2F and 1 pound of 4F on hand. I shoot about a half pound of 2F per year. The 4F is only for the pan and should last me for some time. I know not to keep it in a gun safe but was wondering what is the safest way to store it long term in a home with a connected garage. Thanks in advance