Help your dog overcome their fear and anxiety with the Thunderworks ThunderEase Calming Collar for Large Dogs. The collar uses calming pheromones to help dogs feel more relaxed and comfortable in scary situations, such as vet visits, travel and thunderstorms. Once activated, the collar's calming effects last for up to 4 weeks. The large size fits necks measuring up to 24 in. Pair this calming dog collar with the ThunderShirt (sold separately) for greater effect.How it Works

ThunderEase uses dog appeasing pheromone (DAP), which is a naturally-emitted pheromone produced by nursing mother dogs. This pheromone is recognizable by dogs at any life stage, and it works to calm anxious dogs.

Special Precautions

• Keep away from children.
• Remove before bathing and replace when the coat is dry.
• Not for use on dogs with severe skin lesions.
• Do not attach a leash to this collar.
• Leave pouch unopened until ready for use.
• If your dog has symptoms of a medical problem or disease, do not use this product. Instead, consult your veterinarian.