It should work just fine. If you are buying nucs to fill all your equipment, you should not need lemon grass oil. If you have extra equipment that you are also setting up, then using them as traps is how I do it also.
My bad for being vague. I was told that I should do the lgo in case scout bees were out scouting. I set up 4 hives so far and put lgo in 1 of them. There was a bee flying around and landing on the boxes but I never saw it enter one. That was around 3:00 when the temp here was around 58 degrees. Sorry for the confusion.
Ok, I see what you mean now. Yes, you can do that but you might have better luck if you put any boxes you don't need for your nucs on the edge of a field and woods up as far as you choose on a tree. Some have good success putting their "swarm trap" at a comfortable height. LGO works good, just don't add too much or it will actually deter them. Most put a drop on a cotton ball inside the hive and maybe a drop on the entrance area. What do you have inside them? Drawn comb works best, but assume you don't have any. You could do frames with a starter strip or just foundation if that's all you have. J
I’m standing southeast of the hives in that pic. The pines on the left are on the edge of a 3-4 acre hayfield a creek and then about 400 acres of crop field. Directly behind me is a 10 acre horse pasture with a 120+\- crop field beyond that. Behind the hives past the pond is a 40 acre hayfield, the same creek and more crop land.