Mace Dog Walker Bundle Muzzle Pepper Spray and Electronic Dog Repeller - Lot of 2 EPA approved Mace Muzzle provides safe, effective and humane protection against canine attack. Ideal protection for walkers, joggers, cyclists or delivery people. Muzzle Features: Flip-top safety cap; Finger-grip dispenser; Black arm band; Key chain. 17 gram unit sprays up to 10 feet. Contains 10 one second bursts. This combo would make a perfect gift for a dog walker. It gives close range and long range protection. One of the discomforting, but not harmful, features of the Electronic Dog Repeller is the high frequency sound (20,000Hz - 25,000Hz), audible to dogs but not to humans. Ships to all States!