The Feliway is a synthetic copy of the feline facial pheromone used by cats to mark their territory as safe and secure. By mimicking the cats 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 comfort and reassure cats. Its ideal to use when your pets environment has canged, such as a house move, transportation, boarding, hospitalisation and the introduction of a new cat or person. The electronic diffuser will allow the Feliway scent to permeate effectively throughout an area of 50 to 70 square meters. This scent will last approximately four weeks.