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.