FELIWAY Friends 30 Day Cat Calming Plug In Pheromone Diffuser Starter Kit, 48ml - Helps create harmony and resolve conflict in multi cat households, Veterinary Recommended, Clinically ProvenADDRESSES SIGNS OF CAT CONFLICT: FELIWAY Friends helps resolve typical signs of conflict between cats living in the same household, such as blocking, staring, fighting and chasing. With 25+ years of expertise, FELIWAY is approved by over 14 million cats worldwide HARMONY AT HOME FOR MULTICAT HOUSEHOLDS: FELIWAY Friends plug in diffuser uses the science of pheromones to promote familiarity and harmony between cats, reminiscent of the natural pheromones