There’s a spot above our window where wasps keep trying to build a nest. I knock down what they’ve built every morning, but they are persistent! We had this problem at home and I looked up things to do, and one suggestion was to crochet a decoy nest. Wasps are territorial, and will avoid an area that seems to be claimed already. It worked at home, so hopefully it will take care of the issue here without violence or chemicals.
I made a sign so that humans will no not to be afraid. Wasp stings suck! But fake wasps are fine.