Barbed wire across the driveway, Stephanie??? Yikes, are you going to electrify it as well? I sure hope you were exaggerating using poetic license in making that statement - LOL!
Here's an idea...Why not do your best impersonation of an old curmudgeon such as the Clint Eastwood character in "Gran Torino", sit on your porch, wave a walking stick, and repeatedly yell "Get off my lawn!" at any hapless trick-or-treating kiddies who might inadvertently stray your way...
