Feliway For Cats and Kittens contains Analogue of Feline Facial Pheromone (2 %), and is available as either a Plug - In Diffuser (Complete Kit with separate refills available) or a Spray Bottle. (1800petmeds.com)
Feliway is a «feline facial pheromone analogue (also refered to as FFP or FFPA).» (catsandsquirrels.com)