Boveda will never humidify beyond the RH on the package, so there is 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 efficiently Boveda will run and the longer it will last. You’ll know it’s time to replace when Boveda starts spinning hard.

Each Boveda consists of a specially prepared saturated solution of pure water and natural salt. This saturated solution is contained within a water vapor permeable “reverse osmosis” membrane. Within an enclosed desktop, Boveda maintains a predetermined RH level by releasing or absorbing purified water vapor as needed through the membrane.

Boveda provides the cleanest, most purified humidity of any product available on the market today.

Do not mix Boveda RH levels in the same container, and do not use Boveda in the same container with other humidification products. They will not be as efficient as they need to be.