I did an inspection this afternoon. There was drone brood in the comb the bees built between the topbar and bottom bar of the frames. Unfortunately I broke some open. I saw no mites on any of the brood that was exposed. I only saw a handful of larva, but no mites. Is that enough to give me a feel for the mites in the hive? I need to get screened bottom boards on, but just have not as of yet.
It is still early in the season. They will get worse thru summer.