I have so many bees in my yard on my flowers this spring, I decided to put a couple swarm traps on my deck. The house is 34 feet wide where the deck is and I put a deep with comb at each end. The one facing west has dozens of bees coming and going. I know it is not robbing as they are exibiting orientation behaviour. At least that is what I believe it to be. It is the first sunny day after a rainy week and I expect swarming to pop. Been a lot of swarms I hear about, but have recieved no calls myself. The bait box on the east end of that deck faces north and I have not seen a single scout check it out. Great fun watching the scouts at any rate.
Hopefully you will soon have some free bees!
I now have stero! The swarm trap I first saw being visited is now a flurry of activity. I am now seeing behaviour on the landing board I interpret as guarding the entrance. Against other hive scouts? A swarm has definately not taken up entrance but I have hives that are not this active on a cool cloudy day like we are having. The stero is the increasing activity at the other trap on the deck! This is great fun to watch.