The beauty of only having 320 hives James. ?
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Actually what we were doing, this is the first post OA strip visit to an apiary. Assessing damage and rectifying as much as possible, basically setting up the site to get the most honey possible, as a site, rather than individual hives.
Other thing, been an AFB issue in the area with a nearby apiary on one side of me having rob outs, and an apiary on the other side of me having rob outs. ?. So an AFB check was also done, nothing found (phew), but will have to keep a close eye on these.
I mentioned your AFB sniffer