ThunderEase Calming Diffuser Refill for Cats, 30 day

By ThunderEase
Rated 4.3793 out of 5 stars


Selected: Count:


Selected: Count:

$19.99Chewy Price
$24.95Chewy Price
$18.99Autoship Price
Autoship (Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Makes it easier to introduce cats by releasing a calming pheromone that helps them feel safe and secure.
  • Drug-Free formula eases your pet’s stress without unwanted side-effects such as sedation.
  • Continuously releases calming pheromones for up to 30 days, so your pet can feel calm for longer.
  • Can help with unwanted behavior such urine marking and scratching, and ease any general fearfulness. For best results, use for the full 30 days.
  • Relaxes pets during stressful environments and events such as visiting the vet, anxiety while boarding or kenneling and remodeling. Helps soothe travel anxiety experienced during airline travel, car rides and moving.

See More



Frequently Bought Together

ThunderEase Calming Diffuser for Cats, 30 day
Rated 3.7037 out of 5 stars
$32.95Chewy Price
VetriScience Composure Chicken Liver Flavored Soft Chews Calming Supplement for Cats, 30 count
Rated 3.3853 out of 5 stars
$8.67Chewy Price

Save Extra 20% Off at Checkout

Total Price: $61.61

Compare Similar Items

Customer Rating
Rated 4.3793 out of 5 stars
Rated 4.4725 out of 5 stars
Rated 3.7143 out of 5 stars
Rated 4.1964 out of 5 stars
Rated 3.9721 out of 5 stars
$19.99Chewy Price
$19.99Chewy Price
$24.95Chewy Price
$16.95Chewy Price
$19.00Chewy Price
$18.99Chewy Price
$18.99Chewy Price
$23.70Chewy Price
$16.10Chewy Price
Top IngredientsAnalogue of Maternal Cat Pheromone (2%), Isoparaffinic Hydrocarbon (100g)....Analogue of Feline Facial Pheromone: 2%. Excipients to: 100gAnalogue of Maternal Cat Pheromone (2%), Isoparaffinic Hydrocarbon (100g)....Analogue of Feline Facial Pheromone: 2%. Excipients to: 100gFeline Pheromone Complex (FPhC) 2% ; Isoparaffinic hydrocarbon 48 mL
Health FeatureCalmingCalmingCalmingCalmingCalming

Questions & Answers

7 Customer Questions

Can this be used with kittens who are 5 months old?
Answer by ChewyAug 31, 2019
ThunderEase is synthetic (vegan-friendly) and replicates the pheromones that cats naturally emit to help them feel safer and more calm in their environment. ThunderEase is odorless and only detected by animals – appropriate for any age.

How soon should you start to notice a change in behavior?
Answer by ChewyApr 09, 2020
The effect of ThunderEase will vary from cat to cat. Improvement can be seen within the first week of use, with additional improvement in the following weeks. For best results, use the diffuser for a full 30 days

Does this fit in the comfort zone diffuser
Answer by ChewyJun 30, 2018
This product is only compatible with the ThunderEase Cat Calming Diffuser Kit.

Does this really work for a cat age 14 yrs?
Answer by ChewyJul 18, 2018
This has been tested to be over 90% effective for reducing stress, this is the perfect way to soothe new, anxious and aggressive pets while preventing unwanted or destructive behaviors.

ReviewsWrite a Review

Rated 4.3793 out of 5 stars
29 Ratings
Would recommend to a friend

28 Customer Reviews

Rated 4 out of 5 stars
By Mouse on Apr 25, 2023

Calm sometimes

Callie seems calmer--until she gets aggravated by something or someone--then nothing works--she just has to be by herself for awhile until she gets into a better mood.

Rated 3 out of 5 stars
By yves on Apr 29, 2023

Calming pheronome

I am not shure this product prevents two cats from fighting each other.

Rated 5 out of 5 stars
By Donna on Sep 4, 2021

Household Saver

I know when the Thunderease plugs run out and I forgot to change them in time! Kitties start rough housing a little too aggressively and more often than usual. My orange cat (who is 7) will leap on my back out of nowhere. Cabinets open, paper towels ripped up! When I got my orange cat he was so aggressive and so anxious I bought every calming product and treat I could find. Cost was not an issue! This specific brand made a HUGE difference. Now I added a feral cat into our family and we still have peace - most of the time! I have used these for 7 years, every day. Yes, they feel warm, but all the plug in air fresheners do too. No issues. They are safe and effective. I recommend them to people all the time. A coworker just started using the ones for dogs after her golden doodle scratched the doorframe in the bathroom with separation anxiety. She was amazed! She called her vet and told her they should be recommending Thunderease! I use the spray and plugins. Two paws up!

Rated 3 out of 5 stars
By Lana on Nov 28, 2021


I think it helps a little bit but not really sure. Fights still occurring.

Rated 5 out of 5 stars
By Shaunna on Mar 3, 2021

Great product!

I bought this because we had a stray cat staying with us due to him getting attacked by an animal in our neighborhood. I am familiar with this cat but was still terrified he was going to freak out in our spare room. I plugged this in and we have had no issues. I do unplug it here and there to give him a break and when I see he's getting antsy I plug it back in. He is not skidding and seems at peace. Overall I am happy with the product.

Rated 5 out of 5 stars
By Deecee on Jun 25, 2021

Works well no smell

You never know it's there, but cat stops over grooming.

Rated 1 out of 5 stars
By mamajenna on Nov 30, 2020

leaked and didn’t last

I bought the starter pack and it worked like a dream. Bought this refill pack but they container leaked everywhere and got crusty on the plug in. It was out in less than a week. Thought maybe it was just the one container. Nope. The second container did that as well. Bought a new plug in and out the container in the new plug in. Same issue. Forgot to cancel an auto ship order and the same issue happened with those, too. All 4 containers leaked and lasted less than two weeks. Tried to contact the company but never heard back.

Rated 1 out of 5 stars
By SprayersMom on Oct 31, 2020

Hoping for Help

I'm at my wits end I have brought 2 toms into my house they where my granddaughters and she can no long have them at her house. The 1 is a sweet heart the other is a wild cat attacking the other cats in the house. I'm was will to try anything. I got diffuser, spray and treats. What a waste of money on all!

Rated 2 out of 5 stars
By CatMom on Nov 7, 2020

Not very effective

At first I thought this worked at least a little, but not so much now. She still gets rambunctious in the early morning (like 4:00 am) and decides to start running around and jumping on top of things!

Rated 5 out of 5 stars
By TRink on Oct 9, 2020

ThunderEase Cat Calming Diffuser Refill

These definitely work. My cat stays calm during thunderstorms, fireworks and anything else that has a loud sound.