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
1010 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

87% Positive

Effectiveness

87% Positive

351 Customer Reviews

Rated 4 out of 5 stars
By Therese on Feb 11, 2026

Effective

There is a noticeable difference in our 3 cats stress levels and how they interact when we run out. For what these cost, it does bother me that the diffuser stick

There is a noticeable difference in our 3 cats stress levels and how they interact when we run out. For what these cost, it does bother me that the diffuser stick doesn't seem to be able to suck up that last little bit of liquid. I also wish there was a 6 pack that came with a diffuser since the instructions say to use a new one every 6 months.

Rated 5 out of 5 stars
By Kimberly on Feb 3, 2026

Yay!! Loved this packaging

Being able to buy 6 refills at once was a blessing. It eliminates all the individul boxes and gave me back ups so I don't worry about running out. I have used Feliway

Being able to buy 6 refills at once was a blessing. It eliminates all the individul boxes and gave me back ups so I don't worry about running out. I have used Feliway for years but have never bought this may at once. The price was good and I will buy refills in bulk in the future. The product works great. I have used it with multiple cats and it keeps them happy and comfortable.

Rated 5 out of 5 stars
By Susan on Feb 3, 2026

Works well

I installed a couple of diffusers when I got a new kitten to introduce to my older cat, and although they weren’t completely calm, theydid adapt to each other pretty

I installed a couple of diffusers when I got a new kitten to introduce to my older cat, and although they weren’t completely calm, theydid adapt to each other pretty well. But when the diffusers ran out after 30 days, I started noticing much more aggression and kissing and takedowns, etc., so I got some more and the behavior subsided. So it really seems to work.

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 1 out of 5 stars
By Brian on Feb 8, 2026

Spent 130$ on Feliway products, NEVER AGAIN!!!

The oil leaks everywhere, my dog barked because she could smell it burning. It started smoking. NEVER AGAIN!!!!!!!!!! Now I have a box of 6 that I'm never gonna

The oil leaks everywhere, my dog barked because she could smell it burning. It started smoking. NEVER AGAIN!!!!!!!!!! Now I have a box of 6 that I'm never gonna use.

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.