A little more information...I'm afraid there's no good answers for this one, so I guess I'm looking for the lessor of the evils.
It's an internal brick wall that vents a wood burning stove, with the houses regular exterior wall behind it, Studs, plywood, etc. The exterior has basically a "U" shaped brick wall built against the house, which is basically a faux chimney. The bees are entering between the Vinyl siding and the bricks of the chimney where it tappers from wider to narrower. I'm now fairly confident that they are located in the exterior wall lodged between the internal brick wall and encased by the faux chimney from the outside. :(
Here's the internal brick wall and the heat signature I'm getting from it.
The three orange lights are reflection from the lights in the room behind me, Heat is shown as white in the image.
This is where they are entering, from best I can tell, it's somewhere along the slanted part of the bricks!
Options and problems....
1) Trap out.....Not sure how to get a decent seal for my mesh funnel on their entry point.
Other options which I would like to avoid include sacrificing the bees. However, that too is not without problems.
Can't really get anything to them to kill them. Sealing them in is not a good option because some of the bees are finding their way inside the house. As Kathy points out, if I take away their main exit, it could get real interesting, real quick! Not to mention, the mess that will be left in the wall. Which will still be an issue even if I do a trap out b/c of what Scott has mentioned about SHB's.
So, If anyone has any creative ideas short of tearing down internal or external bricks....I'd love to hear them. :laugh: