Well guys before winter i went out and boutgh 200 lbs of salt preparing myself for the big winter. well i have used about 5 lbs of it tops. by the end of winter i will have used 20 lbs tops, unless a miracle happens and we get a good storm. my question is can i store this stuff until next winter, one bag has been opened but the other 3 are sealed shut (may have a poke hole here and there). they will be in my garage and shuold stay dry, however it can get damp in there.