I had one eating his way through the window sill into my bedroom. He had a nest under an air conditioner for the summer and decided to move indoors. Banging on the air conditioner worked for a day or two. Then he caught on and flew at me through the window in a rage. Looked like a demented vampire - all teeth. I gave up and took out the air conditioner.

If you feed your squirrels shelled walnuts they will eat them rather than bury them. Of course then you will find them gnawing through your screens whenever they think it is feeding time. I found one in my kitchen one morning. Caught him in a trash bin and covered it with a cookie sheet, ran outside in my nightie and threw bin, squirrel, and cookie sheet out the front door to the amazement of passing joggers. The door locked behind me and there I was in my nightie facing a raging squirrel and the neighbors. Life is never simple.