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National Colony Uniting Screen.
A convenient alternative to newspaper and queen excluder.
The white area of the screen, with narrow slots, allows the exchange of food and pheromones but not bees.
Two small areas, with wider slots, allow the slow passage of workwers but not a queen.
Place the screen over the 'good' colony (with the queen you want to keep) with the 'bad' colony (e.g. drone laying queen) on top.

Availability: In stock now
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