Do you know of any place I can shoot as soon as they cross the property line?

Thats where I would feel safe, I don't want anyone I have not specifically invited myself to have access to my home, so I have to look death in the face everywhere before I can shoot?

I will keep searching because I know there has to be some place on earth, that uninvited visitors can be considered a threat.

If they have a face cover is that enough of a threat to shoot them?