How Can We Get Rid of a Squirrel

How can we get rid of a squirrel who is camping on the ledge of my window in my air conditioner?

On the top floor of my house, I have a window air conditioner. A few months ago when the cold came, I saw a squirrel began to drag, but it was for him. Now he has collected literally tons of branches, paper, tissues and other trash that covers the entire area under my air conditioner on the windowsill.

He also began to leave little black droppings on top of air conditioning (this nerve eh?) And around the twiggy nest thingy. Each Once I pull the curtains to make noise and run, he is sitting there looking at me, or goes to the window as if he expects me to feed him or something I never do. If I fall my window screen and physically remove and clean the area will attack squirrel if see me? What can I do to get rid of it? It really starts to get on my nerve, and the edge of my window looks disgusting. Thank you

You can turn on the air that might scare him or try to spray some perfume or fantasy in the CA or outside as close as you can go to nest. I know that the Swiss hate the smell fantastic it could work for squirella too.

Jon & Kate Plus 8 Camping Out 1