"Do you mean there will still be active OA solution in
hives after 2 to 3 weeks ? "

We compared the results from the colleges who used both methods. There is no
registration of these results, only my own, published on my website.
http://home.hetnet.nl/~kroese/ subdir "varoa bestrijden"

the peeks with vaporizing drops after 5-6 days back to lowest level. Faster
than with the trickle method.

My peak stayed from 16 December to 25 December above > 1000 mites total (14
hives)(1600 per day top)
In the period 26 December to 12 January the drop is around 200 per day.
After that date the drop was around 50 per day.

14 January I gave 1 hive 30 Ml for the second time. No bees lost. 14 days
later I checked, the queen had some open brood started. Normal start this
time of the year.

Hennie Kroese....

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