Product review (5 stars): It seems to do its job
I am new to climate-controlled reed cases, but I have three of the Rico cases now (you can read my review if you can find it), I love the reed cases, and I keep the humidifier packs in there.  One thing I notice....reeds kept in those cases never krinkle at the tips when I put them in water.  Maybe that is because there is a bit of humidity in the case so they don't completely dry out.  I can only assume that is what is SUPPOSED to happen :-).