Comfort zone Calming Diffuser Refill Multi-Cat

This is the refill designed for the Comfort Zone "Multi-Cat" system (sometimes branded as Comfort Zone with Feliway Optimum). This formula is typically more advanced. Key Feature: Contains a complex of new feline pheromones ("new pheromone complex") that helps signal safety and serenity more broadly, especially effective in multi-cat households where tension or conflict exists. Usage: One refill lasts 30 days and covers up to 700 sq. ft. It targets a wider range of stress signals than the classic formula.