The Amador Predator Guard protects by deterrence, it provides a smooth surface predators find difficult to climb on. Held on by clamping friction but can be more solidly attached with nails, screws or industrial glue. Also available in bonderized or copper. Contact us for custom sizes or materials. (Also available for 4x6, and 2x2, see other product in our bat and birdhouse catalog.) Stamped in USA, or made in USA of domestically sourced material when available. Predator guards are physical deterrents to bobcats, raccoons, possums, rats, mice and other climbing predators or pests.