I have two black walnut trees in my yard, the squirrels make a nightmare of a mess with them, they have even taken them on top of my house to eat them.
My father in law fed them, then decided to quit. They trashed his bird feeder, then his patio cushions. We live trapped them and turned them loose on an as-hole that screwed him at work. I’ve killed a bunch but I’m old and quit. Piss me off? Here they come. It makes me smile.