Thing is, even if it melts (have not done so in 2 Chicago summers in the cab of a pickup truck)it will melt in the can. no loss of wax, no mess. 2 wicks brings a canteen cup of water to a boil in about 6 minutes in 50 degree ambient.. suspending the cup over the flame was a little tricky, but the candle fits in the core of a cement block, and the cup perches on top just fine. not a good solution for back packing, i suppose...