Ear Mites in Cats: Signs, Treatment and When to See a Vet

By Dr Duncan Houston

Repeated head shaking and dark debris in a cat's ears make ear mites a reasonable suspicion. They do not make it a diagnosis.

The key is to confirm the cause before putting anything into an irritated ear. The right treatment can relieve the problem, while the wrong drops or vigorous cleaning may make your cat more uncomfortable.

Quick Answer

Ear mites are contagious parasites that can cause scratching, head shaking and dark, crumbly ear discharge. A vet can confirm them by examining the ear and its debris, then choose treatment suitable for your cat and any animals in close contact. Arrange an appointment for persistent irritation, and seek urgent care for severe pain, a head tilt, loss of balance or other neurological signs.

What are ear mites?

Otodectes cynotis mites live mainly in the ear canal and feed on surface debris. They can spread between cats and dogs through close contact; kittens and animals living with other pets are common patients. Some infected animals show little irritation.

CAPC's ear mite guidance explains that diagnosis and treatment depend on the animal's age, inflammation, other infections and household circumstances. An indoor lifestyle reduces some exposures but does not rule out infection, especially after a new animal arrives.

What signs should you look for?

• Repeated scratching at one or both ears.
• Frequent head shaking.
• Dark brown, crumbly material resembling coffee grounds.
• Redness, scabs or hair loss around the ears from scratching.
• Sensitivity when the head or ear is approached.

Scratching and shaking can injure the skin or contribute to a blood-filled swelling of the ear flap, called an aural haematoma. Dark wax alone cannot tell you whether mites are present.

What else could be causing the ear problem?

Bacterial or yeast overgrowth, allergy-related inflammation, a foreign body, polyps and other growths can resemble a mite infestation. A one-sided problem, strong odour, pus or repeated relapses makes a complete ear examination especially important.

A persistent head tilt or wobbliness can indicate disease deeper in the ear or another neurological problem. These signs should not be treated as routine itch. Cornell's information on feline otitis describes why untreated ear disease can cause ongoing damage.

How urgent is it?

When is an ear problem an emergency?

Get urgent veterinary help if your cat cannot walk normally, is repeatedly falling, appears disoriented or has severe pain. Collapse, seizures or breathing difficulty require emergency care immediately. Keep the cat in a secure carrier for transport and do not pour cleaner or medication into the ear while waiting.

How are ear mites diagnosed and treated?

Your vet examines the ear canal with an otoscope where your cat's comfort allows, checks the eardrum when visible and looks at debris under a microscope. Cytology can also identify secondary yeast or bacterial problems. A painful or heavily blocked ear may need more controlled cleaning, sometimes with sedation.

Treatment may be a suitable spot-on parasite medicine or an ear preparation. Age restrictions, weight, local licensing and the state of the ear affect the choice. Some products need repeat treatment; others have a different schedule. Follow the exact plan rather than stopping when the ears look cleaner.

Ask which cats, dogs or other close contacts need treatment. They need species-appropriate products, even when they do not scratch. Secondary infection may require separate treatment, and a recheck is useful when signs persist.

What can you do at home?

1. Leave deep cleaning until the ear has been assessed. Ask the clinic to demonstrate any cleaning they recommend.
2. Give treatment on schedule and record each animal's dose date.
3. Wash bedding and clean shared grooming equipment as advised.
4. Watch for less scratching, new pain or balance changes. Contact the clinic if signs worsen or fail to improve as expected.
5. Attend the agreed recheck rather than relying only on the colour of the wax.

Most mite infestations respond well to appropriate treatment. Persistent irritation may reflect reinfection, incomplete treatment or a different ear condition.

Common mistakes

• Assuming coffee-ground debris proves mites.
• Using cotton buds inside the ear canal.
• Applying peroxide, essential oils or improvised home remedies.
• Using another pet's medication or a dog-only parasite product on a cat.
• Treating one animal without discussing close contacts.

Preventing recurrence

Have new pets checked before close introductions and ask whether their parasite programme covers ear mites. Observe ears during normal grooming, without routine deep cleaning of healthy ears. Early attention to renewed scratching helps avoid prolonged discomfort.

Frequently asked questions

Can indoor cats get ear mites?

Yes, particularly through contact with an infected animal. Being indoors does not exclude them.

Can people catch cat ear mites?

Human infestation is uncommon. If a person develops persistent irritation, they should seek medical advice rather than using pet treatments.

Do all pets in the house need treatment?

Your vet will usually consider close contacts because animals without obvious signs can maintain infection. Products must suit each species.

Can I tell mites from an ear infection at home?

No. They can look similar and may occur together. Examination and microscopy guide treatment.

Dark debris is a reason to investigate, not a reason to guess. Confirming mites and treating the whole relevant contact group gives your cat a better chance of lasting relief.

For help organising your cat's ear symptoms and treatment questions, visit ASK A VET™. Balance problems or severe pain need prompt in-person care.