FELIWAY Help is designed to support your cat during temporary stressful situations such as holidays, parties, or home redecoration. It contains natural feline reassuring pheromones that provide calming and comforting messages, perceived only by cats. These pheromones are odorless, safe, and non-addictive. FELIWAY Help! can help reduce common signs of feline stress like scratching, urine spraying, and hiding. For optimal effectiveness, plug the diffuser into an electrical socket in your cat's favorite room 1-2 days before the stressful event and leave it on day and night. The diffuser covers an area of up to 50m². This pack contains 3 FELIWAY Help Refill Cartridges, designed for use with the FELIWAY Help Diffuser.