Sentry Behavior Portable Calming Diffuser for Cats

Deal
Skip image gallery
Slide 1 of 8

At a Glance

  • Calming
  • Made in USA
  • All Lifestages

$12.40 First Time Autoship Price
this order
Save 40% (up to $20) today when you set up Autoship. 
$19.64 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$20.67 Chewy Price
Save $1.32 (-6%)
$21.99 List Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
Promo, Buy 3, Get 4th Free- Mix & Match
In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

About This Item

Details

  • The Sentry Portable Calming Diffuser is designed to help reduce issues like scratching, marking, or excessive meowing that your cat may experience when anxious.
  • This diffuser passively releases pheromones to help reduce stress-related behavior at home or on the go.
  • The portable design requires no batteries or electricity, bringing comfort and calm to your cat wherever they need it.
  • The Sentry Portable Calming Diffuser helps manage your cat’s stress and stress-related behavior.
  • Passively releases calming pheromones for up to 30 days in any area that covers up to 700 square feet.

Ingredient Information

Balance. Support. Promote

For over a decade, Sentry has worked with leading pet experts and top universities, researching effective ways to help pets lead happier, less stressful lives.

Sentry Understands Anxious Pets

Sentry uses pheromone technology to effectively change your pet’s behavior. With the help of their products, good behavior is right around the corner.

Change the Behavior, Not the Pet

Pets can’t talk, so they show they’re scared, frustrated, or not feeling well by changing their behavior. Give them the help they need for excessive barking or meowing, jumping on guests, licking, scratching, and spraying with the Sentry line of behavior products.

About Sentry

Sentry pheromone technology helps promote balanced behavior with science-backed solutions. Help your pet stay cool, calm, and collected with Sentry Behavior.

Shop Sentry

Frequently bought together

Questions & Answers

2 Customer Questions

Can this be used near a litter box?

Answer by Chewy • Sep 17, 2024
This diffuser for cats can be used near a litter box. It is recommended that it be placed high enough to avoid children and pets.

Is this safe to use around rabbits?

Answer by Chewy • Apr 29, 2024
This product will not affect other species of pets in your home (birds, ferrets, rabbits, etc.).
Reviews
Write a Review
3.7
Rated 3.7 out of 5 stars
124 Ratings
Terms & Conditions

70 Customer Reviews

Rated 2 out of 5 stars
By Stephanie on Jan 31, 2026

Second guessing myself

Im regretting purchasing this. It doesnt tell you what the inert ingredients are. I didnt think of it before I bought it. Im wondering what chemicals or endocrine

Im regretting purchasing this. It doesnt tell you what the inert ingredients are. I didnt think of it before I bought it. Im wondering what chemicals or endocrine disruptors may be in there. Wish they would be forthcoming with the information on the package. I won't buy it again for that reason.

Rated 2 out of 5 stars
By Suzanne on Dec 18, 2025

No noticeable difference

I have two cats that could really use some chill. One is an ex feral that I have imposed 2 other cats into her home. The second one , I assume had questionable fostering

I have two cats that could really use some chill. One is an ex feral that I have imposed 2 other cats into her home. The second one , I assume had questionable fostering as she has many feral like issues. I keep looking for anything to add a calming feeling in the house, this did nothing. But was worth a try. It is an inconspicuous item and seems well made.

Rated 3 out of 5 stars
By Deborah on Jan 7, 2026
Top 100 Contributor

Ease of use

Just started using it hoping to help my antisocial cat but so far haven’t seen much improvement but it’s only been about 2 weeks so I’m reserving judgement for a

Just started using it hoping to help my antisocial cat but so far haven’t seen much improvement but it’s only been about 2 weeks so I’m reserving judgement for a while longer. So easy to use.

Rated 5 out of 5 stars
By Andrea on Nov 26, 2025
Top 1000 Contibutor

Yay no plug!

Our house is very old, so outlets are limited. I was very excited to see this option, and it seems to have helped a little! The pee boys haven’t stopped, but it’s

Our house is very old, so outlets are limited. I was very excited to see this option, and it seems to have helped a little! The pee boys haven’t stopped, but it’s less- and frankly, that’s a huge win as far as I’m concerned! Have already repurchased!

Rated 5 out of 5 stars
By kathleen on Aug 19, 2025

Calming Diffuser

My 2 black cats Minnaloushe & Luna were the last of the best buddies since 3 of my other older cats also passed away in the past 4 yrs. Luna passed away peacefully

My 2 black cats Minnaloushe & Luna were the last of the best buddies since 3 of my other older cats also passed away in the past 4 yrs. Luna passed away peacefully at home at age 17. Minnaloushe who is 7 yrs old was very sad without her. She never meowed but after Luna's passing she would walk & meow with her tale down. I decided to get another cat to keep her company. Mimi has joined us. She was in foster care with a local rescue family & is somewhere between 7 - 10 yrs old. Minnaloushe was part of the TNR program & lived on the street. before I rescued her during a cold winter. She's a beautiful & good cat who loves the companionship of other cats & although I know she loves me, would not let me pet her. Enter Mimi the new girl who was accustomed to lots of attention & wanted nothing to do with Minnaloushe. I tried the calming diffuser to bring them together. I was skeptical at first, but I really think it has helped to make the transition easier. Mimi has been calmer & Minnaloushe is now allowing me to pet her & is loving it. I definitely recommend giving the calming diffuser a try. It worked for us.<:-)

Rated 1 out of 5 stars
By Julia on Jan 19, 2026

sentry calming diffuser

my cat peed on it and pooped beside it. waste of money

my cat peed on it and pooped beside it. waste of money

Rated 4 out of 5 stars
By Cheryl on Aug 29, 2025

Second tim

This is the second time I've ordered these. I like them for the car. I put it in there a few days before a vet trip or other reason they need to be in the car. These

This is the second time I've ordered these. I like them for the car. I put it in there a few days before a vet trip or other reason they need to be in the car. These work for some of my cats but not all of them.

Rated 2 out of 5 stars
By Marilyn on Aug 19, 2025

HARD TO TELL IF THIS DOES ANYTHING?

It's really hard to tell idnf this works to calm my day down. We sleep in a little room and he still gets very anxious with over grooming, so I'm not sure it does

It's really hard to tell idnf this works to calm my day down. We sleep in a little room and he still gets very anxious with over grooming, so I'm not sure it does anything to calm him down. So far after a week I don't see a difference.

Rated 1 out of 5 stars
By Janine on Jul 25, 2025

Disappointed

Maybe it hasn't been in use long enough, but it doesn't seem to have any effect on Ivory's aggressive behavior towards Jaspur. Not sure I want to spend more money

Maybe it hasn't been in use long enough, but it doesn't seem to have any effect on Ivory's aggressive behavior towards Jaspur. Not sure I want to spend more money on this product. I chose it because it didn't need to be plugged in, as our space is limited and we have no available outlets where air can circulate.

Rated 1 out of 5 stars
By Angela on Sep 21, 2025

Was hoping it would help!

I got these when we first got Winnie because Tigger was not pleased. Hoping it would calm both down. Did not work.

I got these when we first got Winnie because Tigger was not pleased. Hoping it would calm both down. Did not work.