SENTRY Calming Collars use patented GOOD Behavior pheromone technology. Using a pheromone that mimics the one mother dogs produce to calm their puppies, the collars are clinically proven to reduce or eliminate stress-related behavior such as inappropriate marking, excessive barking, and chewing. Collars help alleviate problem behaviors triggered by travel, thunderstorms, fireworks, being left alone and new social situations. This collar continues to release calming pheromones for your dog for 30 days. It can be used for dogs of all ages and breeds without long-term side effects.

• Scientifically Proven to Reduce Fear of Loud Noises, Excessive Barking and Destructive Behavior
• Helps Dogs & Puppies Feel safe and Secure
• Lavender Chamomile Fragrance
• Releases Pheromones for 30 Days
• Provides Constant Contact With Calming Pheromones