I have a weather tight, uninsulated storage shed attached to my garage, where I have kept about 30 bags bought last fall and expect to have about 20 or more left at the end of this season. If prices are right, I'd like to buy about a ton more over the spring and summer for next year. I'm sure I'll keep the left overs from this season for next year, but should I wait until fall to stock up, or would they store OK over the spring and summer? I've read about humidity being a problem, so I'll probably put a vent in the shed to try and keep that to a minimum. It's largely out of the sun most of the day. And if they can be had again I'll be buying Lignetics.