Your source for Oxalic Acid Vaporizers
You just have to keep in mind not everyone can walk up to their hives, open it up and not have bees bother them. Better to wear a veil than not in my opinion. My bees are very gentle most of the time, but you never know. One day before I even got within 10ft of the hive I had 2-3 bees on my face. Someone had pelted the hive with dirt clods a couple days prior, they were still upset I guess. Two days later, back to normal where I could observe the hive w/o issue. As Keth says, smoke is a good tool to manage the hive when putting it back together. I use it to keep them inside when I open it up as well. Just a quick puff. I don't mind my bees all looking at me, they generally get out of the way when I grab the frames and show no interest in stinging my hands. But you never know, u get a new queen, might get meaner at any time.