Anybody ever try this? Seems to me if the scent were warm it would vaporize better. I do recall seeing a contraption that did exactly this, but it was pricey. I was thinking about strapping a couple of oxygen activated hand warmers to a bottle, with a cotton wick and seeing if that would work. My buddy has a Thermocell for bug repellent and it has an element that gets pretty hot, for about 4 hrs. maybe I'll try to sit a glass bottle on that in a few more weeks. Also, I was wondering if you guys have a particular brand of esterous you swear by.