Requeening aggressive hives in Oklahoma may not apply to the norm. 
Nonetheless, my procedure for requeening hives is to find and kill 
the queen and immediately insert a marked queen in a screened cage 
between two frames of emerging brood. Seven days later, each frame of 
brood is inspected for queen cells which are destroyed; and, the 
marked queen is manually released into the colony.  It is not unusual 
to find up to a half-dozen or more capped queen cells in each colony 
being requeened.  Oftentimes, bees are obscuring the queen cells; 
thus, bees are shook from the frames for ease of inspection.  Two 
weeks after releasing the marked queen, the colony is checked for 
brood and the marked queen.  So far, 100% of the manually released 
marked queens have been accepted by the requeened colonies.

Jim Young

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