Do calming collars work? Pheromone, herbal and music compared

Some do something, for some dogs, in some situations. Pheromone collars have one good lab study behind them, but a systematic review found most of the pheromone evidence too weak to judge. Herbal and essential-oil collars have very little direct evidence. In a large owner survey on fireworks, both scored no better than you'd expect from a placebo. None of them replaces training.

We make a music box that clips onto a collar, so we have a stake in this. Here's how each option stands on the published research, our own category included.

What counts as a "calming collar"?

The phrase covers three quite different things:

• Pheromone collars. These release a synthetic copy of a calming pheromone that nursing dogs produce. The same substance also comes as a spray and a plug-in diffuser.
• Herbal and essential-oil collars. These are scented with plant extracts, often lavender or chamomile.
• Sound on the collar. Devices like the Barkwoo Music Box play music from the collar. It's not a calming collar. It has no scent, no pheromone and no drug. We include it because people searching for calming collars often ask about it.¹

Pheromone collars

The best evidence for. In a placebo-controlled lab study, 24 beagles heard a thunderstorm recording. Dogs wearing a pheromone collar had lower fear and anxiety scores during and after the thunder than dogs wearing a placebo collar, and used the hiding box more.²

In a shelter study, dogs whose bandana and bedding were sprayed with the pheromone lay down more than dogs with no treatment. They also panted and barked less. That was a spray, not a collar.³

The best evidence against. A systematic review of pheromone studies from 1998 to 2008 found that only one study in dogs gave good enough evidence: reduced fear during training. The studies on noise phobia, travel problems and fear at the vet clinic didn't provide enough evidence either way. Note that this review came before the 2015 beagle study.⁴

In an online survey of 1,225 dog owners about firework fears, pheromone products were rated as helping by 27–35% of owners. That's in the same range as herbal products, essential oils and homeopathy, and no higher than a placebo effect would explain.⁵

Where that leaves it. The Merck Veterinary Manual says several studies support pheromone therapy, and that evidence for natural products in dogs is "somewhat limited". It lists pheromones among the add-on therapies that can be a helpful part of a treatment plan, alongside behaviour work.

Herbal and essential-oil collars

We couldn't find a published study of a herbal calming collar itself. The nearest evidence tests the ingredients in other forms:

• In the same shelter study, lavender oil in a room diffuser was one of three treatments linked to less panting and barking than no treatment.³
• Merck notes a calming effect has been observed with lavender aromatherapy and some supplements, while calling the evidence for natural products in dogs "somewhat limited".
• In the fireworks survey, owners rated herbal products and essential oils at the same 27–35% as pheromones.⁵

A scent diffused through a kennel isn't the same as a scent worn on the neck all day, so treat collar claims with care. Ask your vet before putting any scented product on your dog.

Music

Music isn't a calming collar, but it's often compared with one, so it gets the same test.

The evidence for. A review of nine studies found classical music appears calming for dogs in stressful places like shelters. In the shelter study above, dogs played calm piano music lay down more with their heads down, and panted and barked less than dogs with no treatment.³⁶

The evidence against. In pet dogs separated from their owners, classical music helped them settle faster but had only a moderately calming effect. The authors suggest sound has little value in short, acute stress. In the fireworks survey, the owners' setup on the night, including playing music, wasn't linked to the fear improving over time.⁵⁷

Where that leaves it. Modest, and it depends on the setting. The studies used room speakers, mostly in shelters. None tested a collar device, ours included.

See the individual music studies and our post on whether dogs like music.

Side by side (as of October 2026)

What the research rates higher than any collar

In the same fireworks survey, owners rated training highest. Counterconditioning (a treat or a game right after each bang) was reported as effective by over 70% of owners, and relaxation training by 69%. Prescription medication, which is a conversation for your vet, was rated effective by 69%.⁵

These take weeks, not minutes. For the wider picture, see natural ways to calm an anxious dog, graded.

If your dog's fear or anxiety is severe, start with your vet. A collar, a scent or a playlist can be part of a plan, but it isn't the plan.

Where the Barkwoo Music Box fits

To be clear about what it is: the Barkwoo Music Box is a lightweight music player that clips onto any standard collar. It isn't a calming collar. There's no pheromone, no scent and no drug in it. One button starts hours of preloaded music, with no phone, WiFi or app, and it plays for almost a full day on one charge.

What it adds is portability. Speakers stay in one room; the music on the collar goes where your dog goes. That's useful for the moments a room speaker can't reach, like a dog who hides under the bed during a storm. The evidence for music is the modest evidence above, and we don't claim more for our device than the studies found.

You can hear the calming playlist first.

Quick answers

Do calming collars work? The evidence is mixed. Pheromone collars have one positive lab study, but a systematic review found most pheromone evidence insufficient. Herbal collars have almost no direct evidence. Owners rated both in the placebo range for fireworks.

Are pheromone collars better than herbal ones? Pheromones have more research behind them, including a placebo-controlled study. In owner ratings for fireworks, the two scored about the same.

What works better than a calming collar? In owner ratings, training scored highest: counterconditioning and relaxation training. Medication from your vet was rated about as high.

Is the Barkwoo Music Box a calming collar? No. It clips onto your dog's collar and plays music. It contains no pheromone, scent or drug.

References

1. Borns-Weil, S. (2025). Behavior problems of dogs. Merck Veterinary Manual. merckvetmanual.com ↩︎
2. Landsberg, G.M., Beck, A., Lopez, A., Deniaud, M., Araujo, J.A. & Milgram, N.W. (2015). Dog-appeasing pheromone collars reduce sound-induced fear and anxiety in beagle dogs: a placebo-controlled study. Veterinary Record, 177(10), 260. doi:10.1136/vr.103172 ↩︎
3. Amaya, V., Paterson, M.B.A. & Phillips, C.J.C. (2020). Effects of olfactory and auditory enrichment on the behaviour of shelter dogs. Animals, 10(4), 581. doi:10.3390/ani10040581 ↩︎
4. Frank, D., Beauchamp, G. & Palestrini, C. (2010). Systematic review of the use of pheromones for treatment of undesirable behavior in cats and dogs. Journal of the American Veterinary Medical Association, 236(12), 1308–1316. doi:10.2460/javma.236.12.1308 ↩︎
5. Riemer, S. (2020). Effectiveness of treatments for firework fears in dogs. Journal of Veterinary Behavior, 37, 61–70. doi:10.1016/j.jveb.2020.04.005 ↩︎
6. Lindig, A.M., McGreevy, P.D. & Crean, A.J. (2020). Musical dogs: a review of the influence of auditory enrichment on canine health and behavior. Animals, 10(1), 127. doi:10.3390/ani10010127 ↩︎
7. Kinnaird, R.F. & Wells, D.L. (2022). The effect of auditory stimulation on pet dogs' reactions to owner separation. Applied Animal Behaviour Science, 254, 105688. doi:10.1016/j.applanim.2022.105688 ↩︎