In households with more than one cat, conflicts between cats can be frequent. Signs of tension include tail twitching, stalking, chasing, biting, hissing, growling, spitting, blocking one another, fleeing from housemate cats. The Feliway Multicat diffuser works continuously to suffuse the room with a synthetic pheromone that calms cats and reduces tension. Mother cats naturally emit a pheromone message to their kittens after birth to help them feel safe and secure. This helps maintain a harmonious bond between them. Feliway Multicat is a synthetic replica of that pheromone, is clinically proven, and is not a sedative or tranquilizer. It is safe for cats when used as recommended, can be used with medications and is suitable for cats of all ages, from kittens to mature older cats. Use in the room where your cats spend the most time. Multicat is not recommended for overt aggression towards owners. Cat behaviors are complex and in some cases additional behavioral treatment and environmental modifications may be required. Consult your veterinarian for further advise.