I added some more chips to my moisture quilts today, in preparation for the extreme cold weather we are expecting over Christmas. I also looked at my mite drops on my bottom boards post my OAV treatment again, and most hives were showing SIGNIFICANT drops, including, very oddly, the hive I didn't successfully treat. As I mentioned a few posts ago, when I went to treat my final hive, my battery ran out of juice and the OA never vaporized, it just smoldered. After a few tries I gave up, but in spite of that, the hive dropped a TON of mites. Anyone else find that strange? I mean, some of the OA must have reached the colony obviously, but either this hive is LOADED with mites, or that small amount seemed to work just as well as a full dose, based on the similarity between the bottom boards.