You need a dog.

A really, really BIG, protective dog. Kim du Toit had another goblin creeping around his house. Motion-sensor lights don't do squat. Hell, alarms might not do squat if the goblin knows his negative wire from his positive wire. While I doubt that any goblin stupid enough to break into his house wouldn't leave on a coroner's cart, protecting the outside of the house needs to be done. Let the dog sleep in the garage. Anyone stupid enough to sneak into the garage gets what they deserve.