FELIWAY Optimum Refill

FELIWAY Optimum is the best FELIWAY solution to help solve all common signs of stress for enhanced serenity:

  • New pheromone discovery for reinforced efficacy
  • 9.1 / 10 Cat owner satisfaction rating
  • 93% of cat lovers observed enhanced serenity.

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See how to use


  • Just plug and play: screw the vial onto the diffuser unit and plug it into an electric socket.
  • Leave the diffuser switched on continuously.


  • FELIWAY Optimum Refill requires FELIWAY Optimum Diffuser.
  • Refill should last 30 days (48mL).
  • It covers an area up to 70 m2
  • Avoid plugging in the diffuser under shelves, behind doors, behind curtains, behind furniture, as it will not work


  • Also available in an ECONOMY PACK.
  • A New Feline Pheromone Complex to convey more impactful messages
  • Helps cats with more signs of stress, in more situations, and calms cats better than ever
  • To ensure optimum effect, plug in continuously, change the refill every month and replace the diffuser every six months