Or you could use a top entrance.
When you say top entrance, are you talking about an entrance @ the super....? Can you explain..?
I have top entrances ( 1 1\2" holes ) on my hive bodies but anything above that is closed off ( except the vented inner cover ).
I have to wonder about the amount of space one is opening up to invaders when they do this. Wax moths, Small Hive Beatles, ants, wasp, robbers, mice, others.
I thought about that also. With a strong hive there shouldn't be a problem. The bees seem to have taken right to the offsets...we'll see. I'll let you know how it goes.
Think I'll try that this evening, prob just enough space for the workers to enter.
That's all I have open - just enough for the bees to enter and leave. Let me know how and if they use the offset.