Top positive review
Work awesome in humidor.
April 28, 2016
Using these to control humidity in a cigar humidor and they work well at holding it at 79 percent.
I am using a small dish around 4" in diameter across the top and after pouring enough crystals to cover the bottom of the dish, which is around 2 1/4" across the bottom, when water added the crystals expanded to fill the entire container.
They have been sitting in the humidor for around two months now and haven't changed much at all while holding the humidity levels stable.
This amount will last me the rest of my life, I can even use these sewn into hankerchiefs and then when hydrated with water you can then drape it around your neck and as they evaporate it cools you without soaking your clothing.