My goal however was to not have a squirrel die in my walls, second not having them suffer, and third not becoming a crazy white dude lurking the neighborhood with a gun.
At this point however, my efforts and results have become the stuff that dominates the block party conversations. The cayenne pepper was the final straw.
Get motion sensors that trigger the sound of barking dogs, then crank up the volume.
This may create its own problems, but they should be easier to deal with than squirrels:)