Finally calm, even when you're not home
Our NeuroScent™ diffuser sends a signal directly to the calming part of your dog or cat's brain. Not a scent, but a trigger that helps them relax
Formulated specifically for your dog or cat
Not every animal responds to scent the same way, so we tailor the release specifically for dogs and specifically for cats
Formulated specifically for your dog or cat
Not every animal responds to scent the same way, so we tailor the release specifically for dogs and specifically for cats

NeuroScent™ Diffuser for Dogs
- Reduces anxiety and stress
- Covers up to 60m² (645 sq ft)
- 30-day trial period

NeuroScent™ Diffuser for Cats
- Reduces anxiety and stress
- Covers up to 60m² (645 sq ft)
- 30-day trial period

Diffuser Refill for Dogs
- Reduces anxiety and stress
- Covers up to 60m² (645 sq ft)
- 30-day trial period

Diffuser Refill for Cats
- Reduces anxiety and stress
- Covers up to 60m² (645 sq ft)
- 30-day trial period
Reduces anxiety
Leaving without your pet? No worries
Less unwanted behavior
Barking, whining, scratching, or accidents? Gone for good!
Deeper and better sleep
Calms anxious pets for deeper sleep and more relaxation
More than 40,000 diffusers sold
And that number keeps growing, thanks to pet parents giving their four-legged friends the peace they truly deserve
What pet owners actually notice
This is how dogs and cats react to NeuroScent™
* Based on an independent, 4-week customer panel study. Individual results may vary.
Developed by experts
Dosage and release precisely tuned with specialists
Try it risk-free
30-day money-back guarantee, no questions asked
Free shipping
For orders above €50
40,000+ happy pets and counting
★★★★★ Rated 4.7 average from 1,500+ reviews
"Still on the fence? Just do it. Our little bundle of energy has become so much more relaxed, even during thunderstorms. So glad I took the chance."
"Our cat hid for days after we moved. I heard about Boelou through a friend. It works! Within 2 days, Flow was curled up on our lap again like nothing happened."
"We spent hundreds of euros on calming treats and drops for both Mexxie and Lana. Nothing worked, until we plugged this little thing into the wall. Amazing, we're all so happy with it."
"Our couch was destroyed by our little rascals. Since Boelou, they're scratching their post again instead of the (new) couch."
"Max used to bark all day whenever we left the house. With the Boelou diffuser, it's quiet now. You can tell he's a lot more relaxed."
"Snoesje used to hiss and scratch at anyone who came in: territorial, I think. Since the diffuser, she even lets strangers pet her and is much more at ease overall."
Frequently asked questions
How does the diffuser work?+
Dogs and cats don't just communicate through sound, they also use scent signals. Right after birth, a mother dog releases a scent that tells her puppies: you're safe. That signal keeps working for the rest of their lives. This scent is recreated by experts. Not a medication or supplement, but an artificial copy of something that already exists in nature. The diffuser releases this signal into the air, unnoticeably, all day long.
What sets Boelou apart?+
Thanks to the expertise behind Boelou, we know exactly how your dog or cat absorbs this signal best: in what dosage, with what release, and via which pathway to the brain. Not through the regular sense of smell, but through the organ of Jacobson. A separate organ at the back of the nose with a direct connection to the calming part of the brain. We call this process NeuroScent™. Thanks to this expertise, we stand 100% behind the effectiveness of our product.
Is this safe for my dog or cat?+
Yes. The liquid contains no medication and no chemical sedatives. It's a synthetic version (analog) of a scent (pheromone) that dogs and cats naturally produce themselves. Odorless to humans, safe around children and other pets, and the diffuser can simply stay plugged in permanently.
Does it work for both dogs and cats?+
Yes, for both! Just not with the same diffuser. Since dogs and cats respond differently to the signal, there's a NeuroScent™ Diffuser made specifically for dogs and another for cats, each tailored with its own dosage and release.
How soon will I notice a difference?+
Most pet parents notice a noticeably calmer pet within one to two weeks. But keep in mind: every animal is different, so give it some time.
How long will one refill last?+
A single refill lasts 30 days of continuous use, covering a room up to 60m² (about 645 sq ft).
What if it doesn't work for my pet?+
Reach out to our customer service team and we'll work together to find the best solution for you and your pet. Try Boelou risk-free for 30 days.
Your dog or cat deserves this, and so do you
No difference? Reach out and we'll find a solution together
Order the NeuroScent™ Diffuser →