Thanks for those stats Scott

See, I've been in my hives around dark about a handful of times over the years, and the bees were just fine. I haven't seen or experienced anything unpleasant. That doesn't mean that I'm not cautious tho.
If those stats are true then I won't need to do treatments at night. But, I still might give it a whirl some time.
I do know that when a winter treatment is done it's easy as pie, cause all the bees are huddled upstairs.
What would be nice to see for beeks that use the oa treatments, is a vid or pics that show what actually happens in the hive, from vapor to crystals and how it all works on the bees themselves.