Stock up on refills for your Feliway Plug-In Diffuser (sold separately), and maintain a state of security and familiarity to help your cat cope with a new environment. Just plug the Feliway Diffuser into any electrical socket. Much like a plug-in deodorizer, the Feliway Diffuser emits a synthetic cop of your cat’s natural facial pheromone, used by felines to mark their territory as someplace safe and secure. Oil vapor carrying the pheromone will rise in a column of warm air above the Diffuser and prevent your kitty from urinating to mark its territory. Using pheromonatherapy to help sooth your pet is a new field in veterinary medicine. This scent in a room will help reassure your cat while it copes with a challenging new situation. If the Diffuser is being used to help reduce or prevent another behavioral or medical problem, plug it in the room where your cat spends most of its time. Do not cover it, or place it behind a door or beneath furniture. Will cover an area of 50 to 70 square meters and last up to 4 weeks.