The PETA clowns tried that, where I use to live, with the geese population. They were a menace. It didn’t work. Can’t shoot them of course. And when the nearby residences just let loose their dogs to chase them all away the parks were nice and clean and free of geese. Of course can’t do that because the poor geese and off leash dogs are a no no. SO back to a park covered with crap and angry geese that is unusable. As for these deer, and the feral pigs, let the hunters at them.
There comes a point where it can be deemed as mental illness.