The SENTRY Portable Pheromone Calming Diffuser Plus Refill for Cats is a kit that includes a diffuser unit and two refills, providing a total of 90 days of calming support for your feline companions. Made by the trusted brand Sentry, this product helps to reduce stress and anxiety in cats by releasing pheromones into the air. With a sleek design and easy-to-use functionality, this portable diffuser is perfect for pet owners who want to create a calming environment for their cats on the go. Made in Portugal, this unit is a must-have for any cat lover looking to provide their furry friends with extra comfort and relaxation.