Feliway MultiCat is a synthetic copy of the feline pheromone from the mammary gland area after a mother gives birth to bond with kittens. By mimicking the cat’s natural pheromones, Feliway creates a state of calmness and comfort to alleviate tension and conflict between cats. As a result, Feliway can be used to help reduce tension and conflict in multi-cat households. Key Benefits Can be used to help comfort and reassure cats while they cope with a challenging situation and help prevent or reduce the stress caused by a change in their environment. May help with stress caused by a new pet, moving to a new home, visitors, or even rearranging the furniture Veterinarian recommended and clinically proven to start seeing results within the first week Includes diffuser and one refill for the plug-in diffuser, each refill lasts up to 4 weeks Diffuser covers up to 700 sq. feet What's Included: Two Plug-in diffuser, Two 48 mL refill