Originally Posted by ironbender
One of three I had to spray this past summer. 2x6 rafter for reference.

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At least you could see the darn thing to spray it. The bastids set up shop by the entrance to our house, but there's a ~6' deep covered eave so I have no idea where the nest is to and spraying the entrance several times didn't do the trick. Nor could I find it by running a cheapy usb endoscope into the hole they were accessing the nest from. I will be plugging said hole now that they have quieted down for the year.