Mike Barkley wrote:A one way exit can remove some of them but many will stay inside the wall with the queen & the brood. You might be able to remove most with a vacuum cleaner. Some will survive but that's harsh. Real harsh

Think shop vac, with a lining inside of thick cushy foam. Yes, harsh.
There is a forum at Beesource dedicated to this type of thing. Take a wander through there, I saw some suggestions for how to 'bait' them out.
https://www.beesource.com/forums/forumdisplay.php?292-Swarms-Trap-outs-and-Cut-outs
Do wait for spring, but not too long after you see them bringing in pollen. They do that when the queen is laying, building back their population. That is, if it's above 40 F or so.