Apistan, should be left in for about 42- 45 days.  They should be removed
about two weeks prior to any nectar flow.  If you have to remove the Apistan
before the 42 days (21 days from, egg to bee, twice).
I would add the Apistan after I remove the surplus honey from the hive.
Also, its a help to use grease patties.  Two pounds of powdered sugar to one
pound of Crisco (like a lard).
 
Norm
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