I Recently Had The Same Problem.
I got them to leave by parking near a Toyota SUV and playing Country Western music on the radio and turning it up a bit. They dropped their cheese and wiring insulation and headed straight for that other vehicle. I haven’t seen them since.
It might be helpful for someone to know, what kind of car are you driving - make, model, model-year ?
Another thought . . . inside your vehicle you could play a recording (choose any one) of the president blaming everybody and everything and talking about his latest trillion-dollar spending plan for creating jobs and getting the economy going. They won’t last long.
CSA