INTEGRA BOOST 4 X 62% 8 gram packs are for smaller enclosed spaces, like travel humidors and small Humidor Bags.
Within an enclosed container, monitors the ambient RH (relative humidity) and adds or removes moisture to maintain the specific RH engineered into the pack. Because it's impossible for to humidify beyond the RH on the pack, it's impossible to use "too much".
The life of any depends how hard it has to work giving up moisture. When there are very few soft spots left in the, it's time for a replacement.
INTEGRA BOOST - 62% - 2-Way Humidity Regulator
Maintain optimum humidity level to prevent:
Eliminate the Guessing Game - INTEGRA BOOST Humidiccant uses patent pending technology that releases or absorbs moisture, maintaining relative humidity at approximately 62% in a contained environment. Replacement Indicator Cards also known as Humidity Indicator Cards included