bSerene™ Calming Spray releases feel-good signals that mimic the F3 feline facial Pheromone, a pheromone that cats use to mark places, objects, and persons as familiar. As bSerene sends calming signals into the environment, it boosts your cat's mood and helps with stress-induced behaviors. When your cat senses bSerene, they feel calm, safe, and secure at home and on the go. And when they feel safe and relaxed, they're less likely to act out.