i've used both KL and Humidity beads... can't really tell the difference... for the KL i've used this one..
http://www.amazon.com/Ultra-Pet-Crys...9452290&sr=8-7
No problems with either one... the KL in my vinotemp stays rock steady at 68%... they carry this one as well... i havne't personally tried... but its basically the drymistat stuff...
http://www.amazon.com/Ultra-Pet-Crys...9452290&sr=8-8
i have emailed the plant personally... the blue = just dye... no deorderizing...
both the pearls and the crystals... according to the plant...they maintain "freshness" by keeping a certain % of humidity... which I assume is the 68%... cause that's where mine stays..
again this is just based from my experience.... not scientific or anything