3 Pack REFILL of Feliway (Comfort Zone) spray and diffusers. They prevent cats from urinating where they shouldn't. This fantastic new pheromone Feliway spray or diffuser duplicates the smell of a cat's natural scent glands. Cats will not soil anything close to where Feliway has been sprayed.Enjoy extra savings on a 6 pack of 48 ml refills. Feliway Diffuser resolves marking problems naturally. Provides an effective way to control and manage unwanted feline behaviors such as: urine marking, scratching, stress and anxiety. Also useful in acclimating cats to new environments. Creates a calming effect.