Boveda 8g Humidity Control Pack

Scientifically engineered to maintain a precise relative humidity in an enclosed space, and available in multiple RH levels. Boveda will never humidify beyond the RH on the pack, so there’s no such thing as “too much”. You want to think in terms of using at least the minimum because the more you use, the more efficient Boveda works and the longer they last. You’ll know it’s time to replace when the entire Boveda begins turning hard.