HUH??? I sucessfully vacuum numerous swarms a year. We did this "stuck" swarm recently, it mas maybe a week or more old. Comb but no brood. We vac them as soon as they land. They are looser and easier to vac when new. If you go the next day they are very tight.Known for years you can not use a bee vac on a swarm without them dying. Got a swarm that might be "stuck". How long before it would be safe to use a bee vacuum on them as they are in some tight nooks and crannies. Thanks in advance.