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ADAPTIL® Calm Diffuser

£24.88 GBP
 per 

£3.99 Delivery (Orders up to £59.99)

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Certified and trusted products
Size: Refill (48ml)
Description

Turns a home into a feel-good zone for an anxious dog, with a starter set including a plug-in diffuser and a 48ml refill vial that releases an analogue of the natural calming pheromone mothers release to their puppies. Non-medicated support.

Why it’s worth considering

  • Non-medicated calming support using a maternal pheromone analogue.
  • Plug-in diffuser continuously releases calming signals.
  • 48ml refill vial included in the starter set.

Features & specification

Delivered across the UK — free delivery on orders over £59.99.

Care

General Care & Storage
To get the most out of your Petszo delivery, please keep the following in mind:

  • Edibles: Keep food and treats tightly sealed and stored in a cool, dry environment.
  • Fabrics & Beds: Gently wipe clean or wash at 30ºC (always check the individual label first). Do not bleach.
  • Safety First: Regularly check toys and accessories for damage and remove them if broken.
  • Note: Always refer to the specific packaging for exact instructions.

Getting the most out of your Petszo order comes down to storing things properly and checking them regularly. Here's what matters.

Food and treats

Keep dry food tightly sealed in a cool, dry place away from direct sunlight. Resealing the bag or transferring it to an airtight container helps stop the fats going stale, which is the usual reason a dog or cat suddenly goes off a food they previously liked.

Opened wet food should be covered and refrigerated, and used within about 24 hours. Serve it at room temperature rather than straight from the fridge — cold food is noticeably less appealing to most pets and can be harder on sensitive stomachs.

Many treat pouches contain a small oxygen absorber sachet to keep the contents fresh. This isn't edible — remove and discard it before giving your pet the treat.

Beds, blankets and fabric items

Most fabric items can be gently wiped clean or machine washed at 30°C, but always check the individual care label first — padding and covers vary between products. Don't use bleach, as residue can irritate skin and paws.

Removable covers are worth washing more often than you'd think, particularly for pets with skin sensitivities.

Toys and chews

Check toys and accessories regularly for damage, and remove anything that's cracked, split or losing pieces. Small fragments are a genuine choking and blockage risk.

Always supervise your pet with chews and rawhide products, and take away any piece small enough to be swallowed whole. Match the chew size to your pet — a chew intended for a small dog won't last long with a large one, and creates more risk.

Harnesses, collars and leads

Check the fit periodically, especially on growing puppies and kittens. As a rule you should be able to slide two fingers comfortably under any strap — tighter risks rubbing, looser risks your pet backing out of it.

Inspect stitching, buckles and clips for wear, and replace anything showing damage before it fails on a walk.

Litter trays and small pet enclosures

Scoop clumping litter daily and top up as needed; a full change every 1–2 weeks is typical, more often with several cats sharing a tray. Clean the tray itself with hot water and mild detergent rather than strong disinfectants, some of which are toxic to cats.

For small pet enclosures, spot-clean soiled bedding daily and do a full change weekly.

Switching foods

Introduce any new food gradually over roughly 7–10 days, mixing increasing amounts into the current food. Sudden changes are one of the most common causes of digestive upset, and it's easily avoided.

Always check the product packaging. The guidance here is general — individual products carry their own storage, washing and feeding instructions, and those take precedence. If you're unsure about something, or your pet has a specific health condition, speak to your vet.

Questions about a specific product? See our FAQ or email support@petszo.co.uk.

FAQ

Frequently Asked Questions (FAQ)
We’ve compiled answers to the most common questions about shopping at PETSZO. Can’t find your question? Contact us at +44 7782 276061 or email us at support@petszo.co.uk.

1. What are your delivery times?
Orders are typically processed within 1–3 business days and spend 2–4 business days in transit. You can generally expect your order to arrive within 3–7 business days total. Once your order is dispatched, you will receive tracking information to monitor its progress.

2. What if my order is late?
While we strive for prompt delivery, carrier delays can occasionally happen. If your order does not arrive within the expected timeframe, please reach out to us. If a package is confirmed lost or significantly delayed by the courier, we will issue a replacement or a refund to ensure your complete satisfaction.

3. Can I return an item?
Yes. In compliance with UK Consumer Law, we offer a 14-day return period for most unused and unopened items in their original packaging. Please check our Refund & Return Policy for details and hygiene-related exemptions.

4. How can I track my order?
After your order is shipped, we will provide tracking details via email. You can use this information to check the delivery status directly with the carrier.

5. How do I contact customer support?
If you have questions about your order, shipping, or products, reach out to our support team:
Phone: +44 7782 276061
Email: support@petszo.co.uk

Answers to the questions we're asked most often. If yours isn't here, call +44 7782 276061 or email support@petszo.co.uk and we'll help.

Delivery

How long will my order take to arrive?

We aim to dispatch orders within 1–7 business days of you placing them. Delivery time after dispatch depends on the shipping method chosen at checkout. You'll receive tracking details by email once your order is on its way, so you can follow its progress with the carrier.

Do you offer free delivery?

Yes — delivery is free on all UK orders over £59.99. Orders below that threshold are charged at the rate shown at checkout before you pay.

Where do you deliver?

We currently deliver within the United Kingdom only. We don't ship internationally at present. Please note that a small number of items are shipped from outside the UK and may take a little longer to arrive — this is noted on the individual product page where it applies.

What if my order is late?

Carrier delays occasionally happen, particularly around public holidays or in bad weather. If your order hasn't arrived within the expected timeframe, get in touch with your order number and we'll chase it. If a package is confirmed lost or significantly delayed by the courier, we'll send a replacement or issue a refund.

How do I track my order?

Once your order ships, we email you tracking details. Use these to check live delivery status directly with the carrier.

Returns & refunds

Can I return something if I change my mind?

Yes. Under UK consumer law you have 14 days from receiving your order to tell us you'd like to cancel, and a further 14 days to send the items back. Items need to be unused, in their original packaging and in the condition you received them. Return postage for change-of-mind returns is at your cost. Full details are in our Refund & Return Policy.

What if my order arrives damaged or incorrect?

We'll put it right. Under UK law you have up to 30 days to reject a faulty item for a full refund. For transit damage, contact us ideally within 48 hours of delivery with photos of both the item and the packaging. We cover return postage on faulty or incorrect items and will offer a full refund or a replacement.

Are there items I can't return?

For hygiene and safety reasons, opened or unsealed pet food and treats, used grooming products, personalised items and gift cards can't be returned unless they're faulty.

How long do refunds take?

Once we've received and inspected your return, we'll let you know whether it's approved. Approved refunds are processed within 14 days of us receiving the goods, back to your original payment method.

Can I cancel an order before it ships?

Yes — email support@petszo.co.uk with your order number any time before dispatch. If it's already gone out, you can return it under the 14-day change-of-mind period once it arrives.

Products

Do I need a prescription for veterinary diets?

No prescription is legally required in the UK to buy veterinary diet foods. However, these products are formulated for diagnosed conditions, so we strongly recommend speaking to your vet before starting one — and having your pet checked at least every six months while feeding it. If your pet's health worsens, seek veterinary advice straight away.

How should I switch my pet to a new food?

Gradually, over roughly 7–10 days. Mix a small amount of the new food into the current one and increase the proportion each day. Switching abruptly is a common cause of digestive upset.

How do I store pet food once it's open?

Keep dry food in a cool, dry place, ideally resealed or in an airtight container to stop the fats going stale. Opened wet food should go in the fridge and be used within about 24 hours. Always check the individual packaging, as some products have specific requirements.

Contact

How do I get in touch?

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number when contacting us about an existing order — it speeds things up considerably.

Shipping & Returns

Last updated: 16 August 2026

This policy explains how we process, dispatch and deliver orders, and what to do if something goes wrong.

1. Delivery charges

Delivery is free on all UK orders over £59.99. For orders below that value, the delivery charge is calculated and shown at checkout before you complete your purchase — you'll never be charged an amount you haven't seen first.

2. Order processing and dispatch

We aim to dispatch orders within 1–7 business days of the order being placed. Business days are Monday to Friday, excluding UK public holidays.

Once your order has been processed you'll receive a confirmation email, followed by tracking details where available.

3. Delivery times

Time in transit after dispatch depends on the delivery method selected at checkout and your location. Total time to receive your order is therefore the dispatch window above plus the carrier's transit time.

A small number of products are shipped from outside the UK and take longer to arrive. Where this applies, it is stated clearly on the individual product page.

4. Delivery area

We currently deliver within the United Kingdom only. We do not offer international shipping at present.

Please note that a small number of bulky items cannot be delivered to Northern Ireland. Where this restriction applies, it is noted on the product page.

5. Tracking your order

Once your order ships, we'll email you tracking information where available. You can use this to check the live delivery status directly with the carrier.

6. Delays

Some delays are outside our control — carrier backlogs, severe weather, and public holidays being the most common. If your order hasn't arrived within the expected timeframe, please contact us with your order number and we'll investigate.

If a package is confirmed lost or significantly delayed by the courier, we will send a replacement or issue a refund.

7. Incorrect delivery addresses

Please check your delivery address carefully at checkout. If you spot a mistake, contact us immediately — we can usually correct it before dispatch. Once an order has shipped to an address you provided, we may not be able to recover it.

8. Contact us

For any questions about shipping or the status of an order:

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number — it makes everything faster.

Petszo is a trading name of UZMA QASIM LTD (company number 16856550). We reserve the right to update this policy; the date at the top of this page reflects the most recent revision.

See also: Refund & Return Policy · FAQ

Add to Cart Select The Options Above
  • 5 stars: 5 (25%)
  • 4 stars: 0 (0%)
  • 3 stars: 1 (5%)
  • 2 stars: 0 (0%)
  • 1 star: 14 (70%)
H
Henry
Works for my sons greyhound I've been looking after. Purchased elsewhere though. She was very un...

Very good.

A
Alison Hawkins
Hopeless!

I bought this to help calm my 18Yr old miniature pinscher who is very alert and has separation anxiety and barks if alone. Very concerning that the first night she developed a severe respiratory wheeze and could not settle all night. I unplugged it at 5am and she slept soundly once she'd recovered which took a couple of hours to settle down. No respiratory noises since so not an ongoing condition. I've thrown it away. Seriously not right. She only weighs 5.5 kg so maybe not good for smaller dogs

M
Margaret
Opposite effect

Dog got agitated 15 mins after plug in. Crying whining he didn’t do before. He had same effect with medication from vet . Would like to know why he gets worse instead of better. Very strange

I
Ian Hatten
Item not as listed.

I placed an order for two of these items 'Plug-in diffuser with a 30-day refill vial' along with two of the refills. What I received were four refills. When I contacted Customer Services I was advised that this is what I ordered, but my order states different, and that the Calm Diffuser is out of stock. It seems that I was able to order, and asked to review, the Calm Diffuser even though it was out of stock.

M
Matt
NOT a diffusor

The product is sold as a diffusor, yet is actually the refill for the diffusor. Therefore useless without going out and buying the diffusor proper. Wish I hadn't bothered. A lot of expense for two vials I can't use.

S
Sarah Bannister
Adaptil lol

It specifically says it does not effect humans yet it actually does it makes you sleepy and was actually told this by my vet so think they need to change the packaging 🤔

W
William
Mixed

I have used both pills and diffuser. Seem to work, tho diffuser seems more effective. My dog, who is a major terrier barker, seems to be barking much much less, but we haven't used it very long, and use it off and on so I do wonder if I am hearing what I want to hear! We are noticing that the diffuser got very hot after 8 hours, so we don't intend to leave it in for very long or when no one is home.

N
Natasha Cara Teschmacher
Works really well in my old dog

We have been using this religiously for 6 months. Our 13 year old Daxie was diagnosed with alzheimer's and cognitive problems she was crying at night getting lost and distressed in the kitchen. Since plugging this in she sleeps calmly she occasionally barks but we are easily able to pacify her. We have noticed when she is out of the room with the diffuser for too long she gets panicked. This has really changed our lives. Its definitely extended hers. We Re really grateful for this

S
Sonya ryan
Absolute waste of money

Didn't make any difference whatsoever with 6 dogs

D
D Fair
Fluke the Howler

This product is expensive and does not work. I have had it continually plugged in for over a week now and It has done nothing to help my dog with his anxiety he is still howling and crying.

I
Isabella
It helps

Firework nights & bad weather, I think this product does work , you have to have it plugged in for at least 1 hour for it to take effect

M
Mike Stokes
Disappointing

Gave off a sickly paraffin like smell which gave me headaches and had no calming effects my dog at all

C
Charlotte
Waste of nearly £50

I bought the collar, the capsules and the spray. My poor dog is still going crazy. They have had no effect whatsoever on him. Very disappointed.

G
Gwyneth McBride
Adverse effects

I have been using the Adaptil diffuser for over 2 years now for my beautiful, but anxious, rescue dog. Aside from a couple of issues in 2016, the effect on her has been very positive until recently. I have had to stop using it as she has become very agitated, but once switched off she very quickly becomes far calmer and happier. I have also noted, as one other reviewer has, that some of the refills are lasting nowhere near the 30 days indicated.

E
Emma
Disappointing - opposite affect

Only used it for 24 hours, but the distress that this has caused to our puppy is unbelievable! We have struggled with her at night time, but was starting to get somewhere with a routine and she wasn't crying as much. We also struggle with her during the day whilst out at work (i pop back home at lunch times) and again the crying was getting less and less. Since plugging the diffuser in, rather than keeping her calm, she is now soiling her cage and her crying can be heard from the road.

a
annette
anxiety in my pomerainian

we bought the adaptil diffuser to help our one year old pom with her anxiety over loud noise's (fireworks) and when anyone leaves the house it made no difference so we purchased the spot on alongside keeping the diffuser plugged in still has made no difference is there anything else we could try as this makes me upset to see her crying

G
George
dissapointed. only lasted two weeks

Did not make dog beter during fireworks and only lastest two weeks which is only half of the promised 30 days

O
Oliver
Fantastic

Our 10 month old lab is not wrecking the place anymore and can be left at home on his own since we have started using the diffuser. I completely recommend it.

D
Doug Williams
No help at all.

Bought to help my Patterdale Terrier with anxiety problems. Had no positive effect whatsoever.

I
Isabella
A must

We rescued a dog from Hungary. Very sensitive and nervous. Adaptil really helped to calm her down and life together is now lots of fun. Our dog is much more relaxed. We can leave her on her own with no problems.