I've posted elsewhere that I had a few varroa on a couple of boards. When I checked the next day, they had gone !
Lots of ant activity so I wonder if they are taking them away?
I don't have sticky boards
I did a count a few days ago on a queenless hive and got a count of 16 over 4 days. There was only about a quarter of a frame of capped brood left so decided to sugar dust. This gave a drop of 40 after 4 hours
Had you have used lactic acid spray you would have killed perhaps as many as 90% of the mites in the hive.
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