we tried everything. We got an insect noise maker thing that we were told would keep the birds away. Didn't work. We tried reflective tape in the corners of the house where they were building the nests. Didn't work. We would shoot birds out of the sky and string them up by their feet from the house as a warning to their friends. That may have kinda worked.

The key was to knock down the nests every day and keep after it. It was probably a good three weeks of spraying and knocking down nests everyday before they finally went away.