I've always been one to only buy enough tobacco at a time to last about 6 weeks of smoking and then bought more. Therefore, always left it in the bags it came in without issue. However, am contemplating soon buying another 2 pounds which, combined with the 2 pounds I recently bought, would give me roughly an 8 month supply. So, wondering if the longer term storage that implies would necessitate jarring it up or whether it would fare OK remaining in the bags.I'd prefer not to jar if unnecessary. Thanks for your input.