I have the 55% Integra Boost packs, they work awesome, even for longer term storage. Perfect doobie RH%, in my opinion. They are reusable, and come with an indicator card, letting you know when to replace. My crappy Chinese hygrometers shit the bed a while ago, and would read totally different from each other sitting on the same plate. I have even brought back some from the almost powder dry phase, that are no longer as difficult to roll or nearly as harsh. The terps lost won't return, but you can at least protect the ones that are left.