"I have planted holly bushes around the windows and decks at my house. Whether zed can feel or not, he can lose a pound or two of flesh in them. They will also act as a deterrent to thieves. "

"Whilst I heartily advocate setting up a mesh of razor wire all around one's BOL/base of operations, I have to clear up what I meant by threading wire through hedges, I meant regular wire, of about 1-2mm diameter, which would not have barbs, protrusions or sharp bits, but which would seriously inhibit movement through said hedge. This makes it easier to get hold of than barbed wire, as you can find spools of the stuff I'm thinking of at a large DIY store like B&Q or Focus, making the threading a day or two's work including attaining it, and then you're set for a while. Of course, you'd need galvanised metal for any sort of long-term plan."