The Feliway Diffuser contains a synthetic copy of the feline facial pheromone, used by cats to mark their territory as safe and secure. By mimicking the cat’s natural facial pheromones, Feliway creates a state of familiarity and security in the cat's local environment. As a result, Feliway 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. It can be used to help with urine spraying or tension in multi-cat households. It can also be used to comfort cats when moving house, new arrivals and noisy environments.