Rocky,
For some reason there has to be SOMETHING that is attracting those varmits into your area.
OK,you have sealed up your house and they still get in. I am sure you did this,but those critters can get through the smallest opening but double or triple check just in case.

Are there any safe squirrel repellents available? Ones that will not harm your children or pets?

Did you check with your state wildlife agency to see if they have any solutions??

Just some thoughts to help you out.

I only wish I had those problems with those squirrels in the woods.

Wayne