I have had some swarm traps out and have had no success. There were a lot of swarms this season in this area, so I think I may have been doing something wrong. I have a couple of questions. Is there a particular size that seems to be most effective? I made them with just one deep with some some empty frames and some with wax foundation. I am thnking about adding a medium. Do you think that will be right, or should I use two? I put lemongrass oil inside and on the landing board. Also, is it beneficial to put a pollen patty in a trap? Does that seem to attract bees?