In a message dated 97-05-22 09:18:10 EDT, you write: << Sue Hubbell's "Book of Bees" mentions this kind of "top" entrance. She is working, I believe, in the Ozarks. How far North does this type of thing make sense? I'm in NC close to the SC line. >> Works well in CT some bees propolize the hole down to about one bee size I drill em the size of wine corks so I can stopper them as needed.