Jim, I believe.......of course I've read a lot about bees.....and one could never read all there is about bees......so many opinions......that's another story.........back to believe that whatever attracts them to that spot once, will do it again. My beeyard is in the back yard of the house across the street from my house. I bought the house in 2009 as a fixer upper. The first order of business was to remove the huge hive of bees parked in the soffit on the far end from the carport door, that the occupants used. I called a beeman from a local website. He explained...."sure you can keep them....simply order a hive box and we'll place them in it." With box ready, I assisted him in the cutout/removal process.....I was stung...to say the least.......many times......all over......in places that I didn't know that a bee even wanted to be! The neighbor behind, the fixer upper across the street, now known as HUMMEL FARM APIARY, explained to me that he had to have a swarm removed from his out building a couple of years prior to the establishment of HUMMEL FARM APIARY. ................................The moral of the story is........swarming is good in places that bees like. I know "duhhhhhh!"