Does the collective wisdom of this board have any thoughts on controlling wasps? I can't find any nests under the eaves or around our house, but we always seem to have wasps hovering about, which drives my wife indoors as she is uncomfortable ( nearly terrified ) around them....

I have used a wasp trap in the past, it didn't catch many.

I put some gutter covers on in the last year or so, I am starting to wonder if they are nesting up underneath the gutter covers....I was banging on the gutters yesterday ( with a broom on a long handle ) to see if I could locate a nest under there by watching for them coming out after being disturbed, but I didn't have any luck. There is an old unused wood burning stove stack that has a screen around it, but the screen has large squares so they could be getting in there and nesting I suppose.