Build a fence. If you don’t have one already, installing a fence can be an excellent way to keep unwanted visitors off your property. Open chain-link or ornamental metal fencing tend to be preferable and are ideally secured into concrete to prevent lifting. Solid fences can be easier to climb and offer thieves a place to hide, though some homeowners prefer them for privacy and noise reduction. You can better secure them by having sharp pointed tops or, if you don’t mind a rough look, check out the cost of barbed wire fencing.