Extra Collar for Zones systems. The fast and easy way to help your dog avoid problem areas.Designed by professionals to instantly keep your dog away from problem areas in your home - no training necessary. You can put a ZONE near anything you want your dog to avoid - the trash, kitchen counter, dining room table, baby's crib or protect your fine furniture. Counter, dining room table, baby's crib or protect your fine furniture. Your dog's collar safely reminds her that this space is off limits. The 1.3 oz Innotek comfort collar will easily fit any size dog. Your dog's colllar will work with as many ZONES as you have problem areas.