ADAPTIL Calm On-the-go Collars are a clinically proven solution to help calm and comfort your dog, even outdoors. It works by mimicking calming "comforting messages" that mother dogs naturally release in the air called pheromones. The continuous effect provides constant comfort, helping your dog or puppy to remain calm and adapt to stressful situations like training, boarding, loud noises and fears outdoors. Trusted by veterinarians and pet owners worldwide for over 15 years, more than 8 million dogs have benefitted from ADAPTIL dog calming products.