Hey Joe, I just happened to have watched a video featuring the use of one of these 'swarm catchers'... perhaps this can answer your question [might want to skip into ~3:30]: http://www.iwf.de/iwf/res/mkat/metafiles/04000029460220000000_lo.asx Video presented here: http://preview.tinyurl.com/37kq6k >"Particularly, if it interfered with hive functions such as hindering >foragers from exiting the colony or drones." It seems to me that these would've been employed only when the swarm began to issue from the hives and removed shortly after - rather labor intensive! - Mike ****************************************************** * Full guidelines for BEE-L posting are at: * * http://www.honeybeeworld.com/bee-l/guidelines.htm * ******************************************************