I prepared my traps yesterday, no LGO yet. The bees were on them in front of my warehouse. They were on them in my driveway parked at my house this morning. I catch them on the 2nd story deck at my house exposed to the wind, and facing the opposite direction on my patio 2' above the ground sheltered from the wind. I catch them on a low block wall in a sheltered side yard, on a woodpile on a driveway between two houses. I catch them facing south, west, east and north. I caught one on a follower board in an open box. I catch them in four, five, eight, ten and twelve frame boxes. Number one last year just filled a dead hive, no LGO. I don't over think it, or much else for that matter (just ask Charlie about that). I catch swarms because I set out lot of traps and there are a lot of swarms in my area. My techniques:
Don't medicate your bees so that a lot will die in winter giving you lots of used black combs.
Extract out the honey and let your remaining hives dry them.
Put the combs in your traps with a few drops of LGO.
Set them out on walls, tables, decks, woodpiles, Model T Ford roofs, rock walls, up in trees, garden pedestals, hive stands, back of your pickup.
If there are swarms they will come.
I DO NOT USE ANY KIND OF PLASTIC COMB, FRAME OR FOUNDATION, or traps with screened bottoms.