Feliway Optimum Cat Diffuser Refill, 6 count

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About This Item

Details

  • Helps deal with the worst cat-titudes to reduce pet stress and keep your furry friend calmer.
  • Cur-tails behaviors like scratching, urine spraying, kitty-conflict, and aversion to change using a special pheromone-based formula.
  • Calms pet parents as well, since a less stressed cat means a less stressed you!
  • Ideal in unobstructed areas—plug in the diffuser near your pal’s favorite spots to cover areas up to 700 ft.
  • Refills must be used with a Feliway Optimum Diffuser (sold separately).

Instructions

Learn More About Feliway From Our Team of Experts

Reduce Common Signs of Cat Stress

Feliway Optimum helps reduce common signs of cat stress such as urine spraying, scratching, fears, tensions and conflicts. Benefits include up to 77% less urine spraying, 72% less conflict, 73% less scratching, and 70% less stress due to change.

Drug-Free, Scent-Free Diffuser and Refill

Feliway uses the science of pheromones to send calming messages to your cat to help them feel more safe and secure. Their diffusers are drug-free, scent-free, non-sedating and won't affect humans or other pets.

Used by Millions of Cat Families

Feliway Cat Calming Pheromone Diffusers are used by millions of families around the world to help ease their cats’ stress-related behaviors.

25 Years of Feline Stress Expertise

Feliway is backed by over 25 years of feline stress expertise and scientific research.

About Feliway Optimum

Feliway Optimum is trusted and recommended by vets to calm cats in the clinic and at home.

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Frequently bought together

Questions & Answers

4 Customer Questions

Do these work with the multicat diffuser?

Answer by Chewy • Sep 14, 2023
These refills are compatible with the Feliway Diffuser.

What is the difference between this and the Feliway Multiple Cat diffuser?

Answer by Chewy • Sep 14, 2025
The Feliway® Classic is a synthetic copy of the Feline Facial Analog and can help reassure and comfort cats in their territory. It can also help prevent urine marking and scratching. The Feliway® MultiCat is a synthetic copy of the Feline Mammary Analog and can help provide calming and comfort to alleviate tension and conflict between cats. The Feliway® Optimum is a new complex that encompasses the Feliway® Classic happy messages along with the Feliway® MultiCat harmony messages.

Do these work with the classic calming diffuser?

Answer by Chewy • Feb 19, 2025
Feliway​® diffusers work with any other Feliway​® refills.

Is this safe to use when pet birds also live in the home?

Answer by Chewy • Aug 10, 2025
Some species of caged birds are known to have sensitive respiratory systems, particularly those in the psittacine family (parrots, parakeets, etc.). Therefore, if you are using a FELIWAY® diffuser (FELIWAY® Optimum, FELIWAY® Classic, or FELIWAY® MultiCat), we recommend that you plug it in another room away from your caged bird as a precaution.
Reviews
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4.6
Rated 4.6 out of 5 stars
983 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Coverage Area

83% Positive

Duration

82% Positive

Ease of Use

88% Positive

Effectiveness

88% Positive

337 Customer Reviews

Rated 5 out of 5 stars
By Meredith on Jan 1, 2026

We had to upgrade to optimum

The optimum made a difference. We were on the level below this in 2 diffusers. The day it ran out the cats would act out towards one another at times. We upgraded

The optimum made a difference. We were on the level below this in 2 diffusers. The day it ran out the cats would act out towards one another at times. We upgraded to this and that curbed that behavior. There is a difference in this stronger version in a multicat house-especially a house with a huge age difference where the 3 year old is still an instigating kitten and the elder is just an old dude. Every household is different. These are worth the try.

Rated 5 out of 5 stars
By Joy on Dec 19, 2025

Seeing my cat again during the day! :)

I have a very shy cat who was a feral kitten. We used to have a second cat who was a little grumpy with her sometimes so I used Feliway diffusers, and they got along

I have a very shy cat who was a feral kitten. We used to have a second cat who was a little grumpy with her sometimes so I used Feliway diffusers, and they got along much better. After my other cat died in January, I forgot to refill my diffusers for several months. I thought my shy cat was hiding because she was sad. But once I refilled my diffuser, she's been coming out much more and I'm seeing her around the house during the day again! :) I feel bad I didn't think of this sooner. Feliway really does help my shy kitty!

Rated 5 out of 5 stars
By Tina on Dec 19, 2025

They really do seem to work!

We recently had 2 small sickly kittens visit, and they unfortunately were not very litter box trained. Fora few days my beloved cats seemed confused about all the

We recently had 2 small sickly kittens visit, and they unfortunately were not very litter box trained. Fora few days my beloved cats seemed confused about all the places that were now smelling like litter pans, and used those same spots. Once I figured out what was happening, I cleaned the areas really well, threw away bedding, and set up Feliway dispensers in every room. It helped immediately, and we are now all back to using litter pans. Thank you, Feliway. You really helped me.

Rated 5 out of 5 stars
By Julie on Jan 23, 2026

Excellent product

These pheromone diffusers work great and help take anxieties down a notch. Make sure to add a second one based on your house square footage and add to calendar to

These pheromone diffusers work great and help take anxieties down a notch. Make sure to add a second one based on your house square footage and add to calendar to check when refill needed. Highly recommend. We use these at the animal shelter wherever cats are housed.

Rated 5 out of 5 stars
By Kathleen on Dec 19, 2025

Help with order

I was ordering the Feliway plus some nutraceuticals to help with a little conflict going on in the house. Both products seem to be helping so I was ready to get

I was ordering the Feliway plus some nutraceuticals to help with a little conflict going on in the house. Both products seem to be helping so I was ready to get them onto Autoship. Chewy was the most reasonably priced source plus I had help from Chewy's 24/7 help line. As always, friendly , knowledgeable and provided the help I needed to get this all set up.

Rated 4 out of 5 stars
By Leanne on Jan 11, 2026

Less anxiety

I always question whether this product works until the containers are empty. Then I notice heightened levels of anxiety in especially one of my cats. I do recommend

I always question whether this product works until the containers are empty. Then I notice heightened levels of anxiety in especially one of my cats. I do recommend the Optimum level and the Feliway brand as the only one that really does the trick.

Rated 5 out of 5 stars
By Sallie on Dec 12, 2025

calm restored

So our cats personalities vary from laid back to “bossy pants “ and everything in between which creates tension in our feline world. The Feliway has helped to smooth

So our cats personalities vary from laid back to “bossy pants “ and everything in between which creates tension in our feline world. The Feliway has helped to smooth out ruffled feelings and fussing from our one “boss lady.” We have 3 spaced out throughout our home and are very consistent in keeping them from running out. Really grateful for peace in the cat kingdom.

Rated 3 out of 5 stars
By Laurene on Dec 4, 2025

Easy to replace in the dispenser

I keep reordering these for my 4 dispensers. They're easy to replace the used bottles. No mess. Honestly though, I'm not sure if they are effective. My Tommy is

I keep reordering these for my 4 dispensers. They're easy to replace the used bottles. No mess. Honestly though, I'm not sure if they are effective. My Tommy is a very, very sensitive cat. He's startled at any loud noise and runs and hides, deathly scared of visitors, or a person approaching the house. I haven't seen any improvement since using these, but I guess I just keep hoping.

Rated 5 out of 5 stars
By Lawrence on Dec 28, 2025

You won't notice it's working till you are out of it!

We have continually used this product for many years. We have multiple cats, and they get along very well...till the Feliway runs out. Then, it seems there is more

We have continually used this product for many years. We have multiple cats, and they get along very well...till the Feliway runs out. Then, it seems there is more "snarkiness" and picking on each other when it runs out. Definitely sold on this product.

Rated 4 out of 5 stars
By Louise on Jan 14, 2026

seems to take time

there was no noticeable change between the two cats until about a month. Then they were both able to sit near each other but one still hissed when on the floor

there was no noticeable change between the two cats until about a month. Then they were both able to sit near each other but one still hissed when on the floor and passing by each other.