Sentry Calming Collar for Cats 1-Pack , One 30 Day Collar. Open box 73091053378 | eBay
Amazon.com : SENTRY Calming Collar for Cats, Up to 15-Inch Neck, Includes Three Cat Calming Collars, Lavender Chamomile Fragrance : Pet Relaxants : Pet Supplies
Amazon.com : Calming Collar for Cats - Pheromone Calm Collars, Anxiety Relief Fits Small Medium and Large Cat - New Version - Adjustable and Waterproof with 100% Natural 2 Pack : Pet Supplies