Big Disaster in hive. So sad right now. I was doing an OA treatment, my second one this fall when the hive caught fire I have done this 5 or 6 times in the past with no problems but lost 4 to 5 frames to the fire with half the bee's killed. I didn't find the queen so I'll look in a couple of days to see if she made it. The end of the vaporizer even got burned off. I used a battery charger that I used last week that can do 3 to 4 hives so I don't think that was the problem. I have two deeps and used a half a teaspoon of the wood bleach that I have used in the past. Any idea's of what happened. So bummed!