Pretty much all flying bugs (including flying carpenter ants) are attracted to light so a bug zapper would be a good option, especially if you can keep the rest of the room dark. Swarmers mean
you probably have a sizable infestation.
Another thing you should consider is why carpenter ants were infesting your home in the first place... that usually means you have damp wood somewhere in your home which likely means a leak. Check your attic/roof/etc.
It's possible the pros killed the colony, but another one might replace it if you don't fix the underlying issue.