I wonder if too much lemon grass scent? I bait every few months. I have also had zero luck this year, but I know some of the neighbors who had bees before do not this year, so maybe not many swarms around. My own bees swarmed 4 times.
This sounds good.All of my swarm traps have used dark brood comb in them from a hive of bees that died out the previous year.
Not so simple to point to your trap design change.I caught nothing for several years until last year when I switched to stacked 5 frame nucs ...... I'd have to check my notes but I believe it was 4 or 5 from the same spot.