Ever wish you had a force field to keep your dog from your rubbish containers, fine furniture or the cat’s litter box? Totally cordless and requires no training. Each Barrier sends a wireless signal that covers a 2’ to 12’ area indoors or out. The system causes a small charge, similar to static electricity, if the dog goes within the zone (say, near a trash can). The collar weighs only 1.3 ounces and is powered by one AA battery, not included.