Innotek Extra Zone Barrier. Designed by professionals to instantly keep your dog away from problem areas in your homeΓÇòno training necessary. You can put a Zone near anything you want your dog to avoid - the trash, kitchen counter, or new sofa. Each Zone protects an area from 2ΓÇÖ to 12ΓÇÖ. For use with Zones Instant Pet Proofing Barrier Systems. The Add-A-Zones disc is also compatible with all UltraSmart in-ground systems. *** If heat sealed plastic packaging is open, all sales are final *** Innotek Extra Zones Pet Proof Barriers: Extra Zone Barrier #ZND-1000 - Training Tools