CALMS YOUR CAT IN TEMPORARY STRESSFUL SITUATIONS: FELIWAY Help! plug in diffuser uses the science of pheromones to send happy messages to a cat's brain, reducing their stress and creating a relaxing atmosphere for them at home. PROVIDES 7 DAYS OF CALMING EFFECT: With just one cartridge, the diffuser offers up to 7 days of calming benefits, helping to relax your cat and improve their quality of life. Each diffuser covers large living spaces (up to 50m²). FELIWAY EXPERTISE: With 25+ years of expertise, FELIWAY is trusted by cat parents, achieving a satisfaction rating of 9.1/10 and approved by 14 million cats worldwide. FELIWAY Help! comforts your cat in stressful situations or changes. VET RECOMMENDED: Clinically proven and simple to set up, FELIWAY Help! is trusted by vets to improve your cat's well-being with an easy, hassle-free application, backed by decades of expertise. FELIWAY SAFETY: FELIWAY pheromone products use cat's natural messaging system. Drug-free and non-sedative, all FELIWAY products are safe for people and other animals in the household.