Thornit Powder for Ears

Thornit Powder for Ears
20g Bottle

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  • 20g Bottle £8.49


Thornit powder is the most effective and traditional canker powder remedy that can be applied directly to the ear surface of dogs, cats, and small animals in order to treat cases of ear mite, reduce symptoms, and ease irritation. Ear mite causes visible symptoms of wax build-up and is often accompanied by an unpleasant odour.

The powder works rapidly when massaged gently just inside the ear surface, acting to eliminate wax caused by troublesome ear mites.

It is worthwhile applying Thornit Powder to the paws of your animal also, in order to prevent cross-contamination — this can be done with ease by placing some of the powder in a bag and working it into the paw, pads, and halfway up the leg. Browse ear and eye medication and other non-prescription medications.


Zinc oxide, talc, iodoform, boric.

Directions for use

For all treatments only a very small amount of Thornit powder is needed per dose. Apply Thornit powder twice a day. Care should be taken as iodoform could stain a pale carpet or furnishings.


Any excess moisture can be gently mopped up with a cotton wool swab. DO NOT REMOVE WAX. Under normal circumstances powder should NOT be put into the ears, but brown wax acts as a cork.

Get the animal in a good position lying on its side. With cats this can be difficult, and help may be needed. Give your pet some love, apply a pinch of powder using the end of a small spoon and lightly dust around the inner ear, avoiding the ear hole. Gently massage it in with your fingers from the outside. Relief comes with the first dose, but the treatment should continue for one to five days (usually three). When the brown wax starts to move, stop treating. This means the mite is dead and the wax will come away, pushing out the powder and leaving a clean ear. A pinch of Thornit powder in each ear once a week will keep your pet free from re-infection.

For breeds with long ears it is advisable to dip the ends of the ears in Thornit once a week.

Thornit can also be used for stripping hair from ears — apply a half teaspoon to the hair which makes it much easier to finger pull the hair with it coming away easily.

Intense scratching


Dust Thornit lightly onto skin. If animal has long hair, part with a comb and feed a trickle of powder to the exposed skin — a little powder goes a long way.

Anus itching

Apply just a tiny amount of cream or Vaseline to the finger of glove and dip into Thornit. Apply to just under tail where necessary.

Itchy paws

Hold the paw in a plastic bag containing a small amount of Thornit powder. Work it between claws, into pads, and a long way up the leg.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:00am - 5:45pm
  • Sat: 9:00am - 1:00pm
  • Email: [email protected]

All prices include VAT where applicable.

Reviews (151)

Summary of Reviews for Thornit Powder for Ears

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
145 out of 151 (96%) customers would recommend this product.
5 stars (121 reviews)
4 stars (23 reviews)
3 stars (3 reviews)
2 stars (2 reviews)
1 stars (2 reviews)

Only verified purchasers of this product can leave a review.

55 Thornit ear powder
Verified Purchase

By on 7 September 2021

Bought this powder to treat itchy smelly yeasty ears in my Border terrier. After one treatment he stopped trying to scratch his ears. Used once a day for a week, am now using once a week as a precaution. My dog now has nice clean pink earflaps, and no scratching. Very pleased. Thornit powder is easy to use, needs just a tiny pinch dusted in the dogs ear flap using a soft clean makeup brush to dust it around the ear flap. Slight medicinal smell but not unpleasant to use.

Customer recommends this product

55 Great
Verified Purchase

By on 4 September 2021

Very effective and did the job

Customer recommends this product

55 Ear powder
Verified Purchase

By on 27 July 2021

Easy to apply and did a great job

Customer recommends this product

55 Ear care
Verified Purchase

By on 20 July 2021

Thornit is a great traditional remedy to stop ear mites, I also use for minor skin abrasions from eczema etc, delivered fast & fuss free as usual from Biovet

Customer recommends this product

45 Seems to work
Verified Purchase

By on 4 July 2021

It's better to use than ear drops

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Thornit Powder for Ears, including answers from our team.

27 July 2021 at 1:44pm

What about ingestion?

Teresa said

Is it safe for the dog to lick its paws after application of the powder?

  • VioVet Staff

I have contacted the manufacturer with regards toy our query, they have responded with the following:

If the amount of THORNIT ingested is small then the pet may vomit (as it
would by ingesting any unusual food, for example).

We are not vets but can only go by what our customers relate to us. We
have been selling THORNIT since 2002 and have only had a smattering of
ingestion reports. All said, those very few pets vomited( or had no
effects) and was then fine.

The main ingredient in THRONIT is talc. This is an inert substance. The
active ingredients (which are present in small amounts) are Iodoform,
Boric, Zinc Oxide. Looking at the Safety Data Sheets, the amounts which
need to be ingested are at kilogram levels of a substance. 2g of one
active ingredient (present in a typical full small bottle) should not
cause any problems. The actual levels of active substance are only known
to the manufacturer as this is a commercial secret.

28 August 2018 at 10:37am

How long does Thornit take to work?

Emma Skeates

I have been using Thornit on my Labrador now for 4 days. He has had ongoing ear infections for most of his life which I have spent a fortune on with various vet prescribed washes, drops and oral antibiotics, none of which have helped. So I thought I would try this. The wax (well brown yukky stuff) seems definitely to be drying up slightly, but there is still a lot of moisture when I massage his ear. The texture is changing to a more treacle like consistency. My question is (a) how long does this normally take to work and (b) do I need to wash his ears out with ear wash whilst treating him with Thornit?

  • VioVet Staff

Hello Emma,

Thank you for your question.

Thornit works by drying out the canker so we wouldn't recommend washing out his ears as you are wetting the powder. You can carry on using for a little longer for up to 10 days but if the problem hasn't been resolved by then it probably isn't canker or mites and you would need to speak to your vet again.

Hope this helps,


26 September 2016 at 8:21am

Thornit safe for puppies?


Hi, can you please let me know if thornit is safe for my 16 week old poodle puppy

  • VioVet Staff

There are no ingredients in Thronit that are unsafe for puppies so you should be fine to use it.

17 June 2016 at 6:50am

Thornit powder safe for pregnant bitches

Hayley Bailey

  • VioVet customer since 2016
  • From: Lincolnshire, United Kingdom

Can Thornit powder be used for pregnant bitches? Thanks

  • VioVet Staff

This product should not have any effect on the pregnancy in any way, though the general advice is to avoid any medication in the first third of pregnancy (first 3 weeks for a bitch) if possible.

19 December 2015 at 5:25pm

Skin Allergy

Sandra Boajey

Can I administer Thornit powder on my choc labs itchy sore ears because he does suffer with skin problems

  • VioVet Staff

This product should be safe to use at the opening of the ear canal. However there are lots of causes of ear trouble and this will not be able to treat all of them. Many people do find it to be effective.

5 August 2015 at 9:38am

Thornit for lactacting bitch


Is thornit safe to use on lactating bitch?

  • VioVet Staff

There is nothing in this which should cause a problem for puppies or the bitch, so it should be safe if used as directed.

22 July 2015 at 12:45am



How does it work
How does the powder kill the mites?

  • VioVet Staff

This is not stated but I expect it will be a mechanical obstruction of the spiracles (breathing pores) found on the surface of the mites. It is probably not a chemical effect as such.

11 February 2015 at 5:18pm

How to administer powder

Trish Shorland

  • VioVet customer since 2015
  • From: Somerset, United Kingdom

How can I administer the power without getting it in the ear canal

  • VioVet Staff

If this is applied to the inside of the ear flap and the top of the ear canal, a minimal amount will travel a short distance into the ear canal. It is in fact difficult to get a powdered product to travel deep into the ear canal even if you try. Having said that, most modern veterinary dermatologists recommend that powdered products are never placed inside the ear canal. This makes it a contentious issue because this particular product appears to work well when used as directed. I am sure that some powder will travel a short way inside. I think everybody agrees that if an ear is producing lots of discharge, this needs washing/cleaning out. Clogging the outer ear up by adding powder to it would usually be a bad thing. However a mildly sore ear which appears not to be obstructed with debris will often respond well to this product. The over-riding advice has always to be to consult your own veterinary surgeon if in any doubt or if your pet is in discomfort or not responding well to something you are doing.

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