A local sod farmer told me they shoot one and leave it dead in the field. All the other crows show up for a crow funeral and when they leave they dont come back. They remember the crow that died there and treat the area as dangerous.
Ive seen it so many times on lawns "Oh no the moles are killing my yard, what do I do?" "Buy grub control" "I bought mole pesticide and traps instead because I don't care about grubs, what are these giant dead spots in my yard now?" "Grubs, because you killed the only thing suppressing the grubs."
If you're in the PNW, those invasive grubs were going to destroy your lawn anyway.
More information: https://invasivespecies.wa.gov/priorityspecies/european-chaf...
Some trees put out a chemical barrier to growth, as well. Red Cedar and Black Walnut do it around here.
So you can let the crows have your grubs, or the grubs your grass.
It solved the problem.