Buy on Amazon
We have found a Mason Bee Cocoon Humidifier, that has humidity control that, was designed for cigars. The quality of this humidifier exceeds what we can produce in house and works perfectly for Mason Bees.
Therefore we are providing you the link on Amazon so you can purchase direct.
If you keep your mason bee cocoons in the Refrigerator for any length of time, were the humidity hovers around 10% you need a humidifier. Just put the release tube your cocoons arrive in inside the humidifier for over winter storage.