Connect the Feliway Classic diffuser to a socket located in the area most affected by marking or where cats spend the most time. The diffuser must not be blocked by furniture or curtains, as this can prevent proper release of pheromones and may cause staining. The diffuser covers an area of approximately 50-70 m² and releases pheromones for up to 4 weeks. If results are insufficient despite correct usage, using the Feliway spray is recommended. Cat Products