How Boveda Works for Case Seasoning
If you look at the chart above, to move a typical acoustic guitar case from 35% relative humidity to 50% relative humidity it takes over 100 grams of water. If you place a perfectly humidified guitar into a dry case, the case will draw moisture out of the guitar.
We recommend seasoning your guitar case first for best results if you haven't been using humidity control. It's the same idea and process as seasoning any wooden humidor. Simply place 4 Boveda 72% RH packs in your case and wait about 7-10 days. The moisture from the Boveda will absorb into the wood of your case and make your regular 49% RH Boveda packs last longer.
Boveda's 2-way humidity control technology automatically protects your wooden instrument against warping, cracks and other damage caused by lack of humidification or too much humidification. Boveda maintains a constant 40%-55% relative humidity level within your instrument's (closed) case.
Improper guitar storage is the greatest constant danger to the condition of an instrument. Until Boveda, humidified storage meant refilling awkward and unreliable sponges, snakes or discs. Those products only work 1-way, they add humidity whether it's needed or not, while Boveda is the world's first 2-way humidity control.
If not properly stored in a stable environment, your instrument will lose the specific geometry built into it while it was being crafted at the climate-controlled factory. This can cause warping or shrinking, which will change the tune at the least and cause damage at the most. In fact, most repair problems with wooden instruments can be avoided with properly humidified storage from Boveda.
*Do not mix different Boveda RH levels within the same container, and do not use Boveda in the same container with other humidification products. They will fight against each other and reduce the efficiency of the Boveda.
One might expect that if you use a high RH Boveda in the same container as a lower RH Boveda that you'll achieve an environment somewhere in the middle. That is not the case, instead the moisture just transfers back and forth between the Bovedas.