Feliway® Classic pheromone products are clinically proven to provide reassurance to kittens and cats of all ages, helping them feel safe and secure when they need to adapt to new surroundings and changes in their environment (adoption, moving home, vacation home, boarding, new furniture, renovation, new family member or new pet), stressful event (parties at home, fireworks), multi-cat homes, car travel or visits to the vet. Feliway® Classic helps curb inappropriate stress-related behaviors. Include one diffuser and one refill.