EPA approved Mace™ Muzzle dog repellent provides safe, effective and humane protection against canine attack. Canine repellent is ideal protection for walkers, joggers, cyclists, or delivery people. Stops attacking dogs and forces them to retreat. You'll never have to be scared of another dog. Keep with you whenever you're out. Velcro-like attachment can secure unit to bike or car. Features flip-top safety cap, finger-grip dispenser, belt clip and keychain. 17 gram unit sprays up to 10 feet. Contains 10 one second bursts.