OK, 13 days past, we went out last week, saw some activity at the box that we set out, but also noticed alot of was crumbs on the bottom of the box. We saw no guards, no fanning etc., just bees coming and going, flying a beeline into the nearby woods. Tonight, weather permitting I'm going back over to remove the box, I figure it's probably empty, all the traffic that I saw was robbing in progress. The tree still has alot of comb inside, would it be a good idea to try and salvage as much as I can of the old comb? Maybe clean it, freeze it and use it in traps? Temps are in the 30s this week, hard freeze last night, any swarms that happened in the past week or so hopefully will survive.