Humidity control packs are one of those inventions you didn’t think you needed up until you used one. It’s easy; just toss your 2-way humidity control pack inside a jar or sealed packaging and let science do the rest! Thanks to the different salts and a little bit of water, your perishables’ environment is protected by the pack. Next time you get a bag of coffee beans or dried fruit, throw a humidity control bag in there and see how the freshness is locked inside for longer than before when you weren’t using them.