2022 was a big swarm year I collected so many colonies I was giving them away. It started the same day the club distributed NUC's 2nd week in April, I remember helping with the Club NUCs in the morning and collecting a swarm that afternoon.

There is little need for swarm commander on used gear... Once the sun shines on a used box and warms it up they will find it. Smells like home!

How did you apply the Swarm Commander? I've never used Swarm Commander, but I've used lemongrass oil to invite swarms into empty boxes, and the norm is to put a dab on a cotton ball that is placed into the hive box, and that scented cotton ball is later easily removed. 

Also, the scent should degrade/wear off over time. Does the product suggest how often you might need to re-apply it? That reapplication timeline would be guidance for how long it will take for the scent to clear out.

I'd offer pragmatic counsel that once you know when your nucs will arrive, I'd take apart the boxes and frames that you applied the product to and let them air out something like a week prior to bees arrival. Hope this helps.