FELIWAY® MultiCat, from the #1 Vet Recommended Brand, is a diffuser designed to ease signs of conflict between cats, such as blocking, staring, fighting, and chasing. Using pheromone science, it promotes calm in multi-cat households by harnessing the natural message a mother cat releases through pheromones. Each refill provides up to 4 weeks of continuous support, covering up to 700 square feet of living space. Trusted by millions of cat families and backed by 25+ years of expertise, FELIWAY® MultiCat offers an easy, effective solution for creating a peaceful, multi-cat household.