Wasp Problem

Not a useful solution for the OP's problem but regular old WD40 is an instant kill for wasps. I've used it on many wasps and their nests as I generally know where it is. It will leave a temporary stain on a lot of house paint but fades fairly quickly.
 
A yellow jacket is the insect equivalent of a Chihuahua with a switchblade knife. They are much more aggressive (in my experience) than paper wasps.
 
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I got nailed bad in my own house. Had to get into attic to do some wiring. My house is a split entry and attic is only about 4'
at peak. Trap door entrance in a bedroom closet. At this point it's
only 3' high. It's a PIA to wriggle in there. Anyway got up in there
and duck walked to where I needed to be, pulled up insulation
and was instantly in a cloud of Yellow Jackets. They poured it to
me. I think I went through trap door head first. Got lid back in
place and we had to kill some that got down into house. I was
swelled up and sick at my stomach and mad. Wife went to Co op
and bought some kind of fogger and my Son in Law braved the
opening of the trap door and activated it. We had to leave house
according to instructions. Came back next morning opened all
the Windows and run fans. We actually couldn't smell anything.
Did the trick, it either killed them all or run them out. I don't
know for sure except they weren't there anymore. My tools are
still were I left them, that's been over 15yrs ago.
 
You have a nest in your wall. They enter outside through a spot in the siding.

Sometimes the nests go unnoticed and get really big. People will notice a wet spot coming through the drywall, touch it and it crumbles. That's when the problem begins.

Don't fool around with this. Go outside and watch. If you see them, call an exterminator.
My son is in the industry, don't fool around with this, the stories he tells, oh my.
 
Drione dust, puffer duster and a beekeeping suit. Best money I ever spent. :) No more wasting time and money on laughably ineffective sprays. This is the real deal. :D
 
Drione dust, puffer duster and a beekeeping suit. Best money I ever spent. :) No more wasting time and money on laughably ineffective sprays. This is the real deal. :D

Yes, that is the the way to do it. Spray will on lay kill a few.
 
I have used Sevin dust and found it very effective. Actually got the proper applicator and made getting into the entry hole easy. Kill on contact sprays work for a short period but they WILL be back. I amnot sure Sevin dust is legal in all states. Over and improper usage has it banned in some areas.
 
I've got a full bottle of vintage "Black Leaf 40." I'll bet that stuff would put em down pronto...might even do the applicator as well if they don't wear gloves and other protective gear.:D
 
I just went thru the same problem. They were deep in the wall and had established themselves. I called a professional and would recommend the same.
 
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