AS sold by Thornes, to prevent a swarm leaving the hive.
The instructions say to close outer door before 10am and open after 3pm, but the design of the trap is such that drones can exit but not return into the hive, so are stuck in the trap overnight, and if cold and wet would be dead or nearly so in the morning.
Would it not be better to remove the whole trap overnight?
or is there a better design?
Phil