Keeping Squirrels Away?

My next door neighbor is feeding a squirrel, now 3 squirrels, peanut butter cookies. I opened the door for my son and there was a squirrel hanging on the side of my front porch. Making a weird noise. I never heard it make that type of noise before. It also looked like it was hyper. I looked like a rat. When I scatted it away it just make a circle and came back. I was worried if it bit one of us we would get rabies/sick from them. She still continues to feed them. I spoke to her and she says she can do whatever she wants to.

By C.Barcar