Reduce Fear of Loud Noises: Sentry calming collars for cats are scientifically proven to reduce the fear of loud noises, bad behaviors, and excessive meowing among cats Reduce Stress: The Sentry calming cat collar reduces excessive meowing in cats and kittens Eliminate Unwanted Behavior: Sentry cat calming collar helps stop inappropriate marking and unwanted scratching Safe Effective: This calming feline collar is safe and effective when used as directed, without long-term side effects 31 Day Release: Sentry calming collar for Cats and kittens releases pheromones for up to 30 days For more than a decade, SENTRY has worked side by side with leading pet experts and top universities researching effective ways to help pets lead happier, less stressful lives and to strengthen their bonds with their owners. SENTRY Calming Collar for Cats quickly releases a pheromone through an easy-to-slip-on collar that helps alleviate problem behaviors triggered by travel, thunderstorms, visitors in the home, and even introducing a new cat into the family. SENTRY Calming Collar for Cats has a slip-away buckle that loosens when pressure is applied unexpectedly. IMPORTANT: If your cat has never worn a collar before, please follow these instructions: 1. Apply the collar loosely around their neck and supervise them for 10 minutes. 2. If your cat tolerates the collar, tighten it enough so that you can fit two fingers in between the collar and their neck. 3. Supervise them for 30 minutes. 4. If your cat continues to tolerate the collar, you can leave it on your cat unsupervised.