In the midst of an OAV treatment series I was inspecting the bottom boards when I found some bird seed (millet) and cracked corn along the western edge in one hive. The week before I had left the mouse screens off for a day so the bees could clear out dead bees. I did another OAV treatment 4 days ago, and today found more seed in the same location. I would have certainly thought that no mammal could survive an OAV treatment. Any thoughts, anyone? BTW, I've never had mice in a hive before.