Eliminate the Guessing Game! Integra Boost Humidiccant uses patent pending technology that releases or absorbs moisture, maintaining relative humidity at 62% in a contained environment. Ensure your stash is kept fresh with this revolutionary product. BOOST's 2-Way Humidity Regulators control your moisture consistently and effectively inside any sealed container. Integra includes a smart, simple-to-read replacement indicator card with Boost packs. Simply replace the old pack with a fresh one when the dot on the Replacement Indicator Card turns bright blue.