Installed Apistan strips
The treatment will last 45 days, ideally. It may be snowing & 20f degrees at that time so I take it out whenever I can at around 45 days.
Normally I'd like to have the strips in on the first of November but I was late this year. It shouldn't be a problem though. Instead of pulling out the strips on December 15th, they'll come out on January 1st. Either way the queens should have stopped laying so there will be a break in the brood cycle. Which is the best time for the Apistan to be killing the Varroa mites. As apposed to Spring when there is no brood cycle break. Plus I'd have to fight against the timing of the Flow & adding honey suppers; which can't be done while treating.
A 24 hour, non-sugar, sticky board drop from November 1st revealed higher than acceptable mite populations in all 3 hives. Mary = 123, Myrina = 66, & Duchess = 103. 50 is considered the population threshold.