Philly squirrels are assholes. It's impossible to plant anything, as they'll pull everything edible off of the plants. Chickenwire can keep them out, but that's a pain. They don't like hot peppers, but they'll sample each and every one just to be sure, then toss the rejected bit down. They seem to mostly live on a diet of things taken from Popeye's dumpster. Once my cat ran out onto the back porch and one dropped half a chicken parm samwich on its head. At least he doesn't try to run out much anymore.