I have three humidors. One for aging and two for smoking. One has gel tablets in it and the other two have that green flora stuff. I use the cigar juice in the green flora ones but as you know they go downhill after awhile. Here comes the good part. I was watching an episode on "how it's made" and they were doing a thing on diapers. At the end they cut one apart and proceeded to pore an ungodly amount of water into the part that holds the liquid. Well I have little grand kids and a supply of diapers in the house. I took out one of my flora humidifies apart and took out the flora thing an it crumbled in my hands. I replaced it with the diaper stuffing and pored what seemed like an abnormal amount of the propylene glycol solution in it. Well it shot up 72% and has been there for about 1 1/2 months now. There you have it. Take for what it's worth.