Fall mite treatment
Today I found my first varroa mite ever on the bottom board. In fact, I found a lot of them. They were all dead even though my last treatment was in August. Not sure if the bees are killing them? Anyway obviously I’m going to treat. I have Formic pro on hand, but wonder if that’s sufficient to really knock the mites back for winter. Should I try apivar or OA? Daily highs are in the low 60s or 50s here so I want to minimize opening the hive.