Feliway Refills, 3 Refills for Feliway or Comfort Zone calming diffuser. 3 left from a 6 count pack. Expires April 2025, so plenty of time to use up! Excellent deal on these usually very expensive refill bottles! Works in both genuine Feliway diffuser and Comfort Zone diffusers. These are refills bottles, so the diffuser itself is NOT included. Cat diffuser refill, feliway refill, feliway bottles, comfort zone refill, comfort zone bottles, calming cat pheromone diffuser refill