Is it just an empty super? Do you fill it with frames? Half fill it? What do you do to make it attractive ? Hang it in a tree or leave it on the ground?
I've read a lot about swarm traps, but am short on experience.
I built one that is about the same volume as a 10 frame deep (its basically a 5 frame nuc
but double the height). I put it out with a bought swarm lure, but its late summer so I don't
really expect much.
From reading up on the nasanov pheremone, it's mostly citriol and geraniol, about 2:1 ratio apparently.
Come swarm season I will build a few more, but am going to bypass buying the commercial lures (price is pretty steep...) and just get some
lemon myrtle and palmarosa oil, a couple of drops on cotton wool in a sealed sandwich bag and see how I go.
Of course, I may catch nothing.