I treated 3 of my colonies with OAV yesterday morning. I was planning on doing them all, well except the small mean colony, but I ran out of time because it warmed up too quickly, and the traffic and irritated guard bees were making things difficult. We're having highs around 70F and lows around 60F right now, so the bees are still flying, and I'd prefer to do OAV when they aren't, since then all the bees are at home to get treated. Only one colony had any significant drop, and even that wasn't bad, so I think I may just wait to treat the rest until Thanksgiving like I normally do.
I used 2g of OA instead of 1g this year, since I have an extra box of honey on, and in two of my colonies I had what looked like a grey melted lump, of what I'm assuming is OA, on the bottom board insert. I've never had that happen before. Is that normal when using a higher dose?