Cat Ear Care: Mites, Infections, and When to See a Vet

What healthy cat ears look like

The inside of a healthy cat ear is pale pink, with a small amount of light brown or golden wax. There should be no strong smell, no visible swelling, and no scratches or crusts on the skin. If you gently touch the ear, your cat shouldn’t flinch or pull away.

Cat ear canals have very little hair, and cats groom their ears with their back paws, so they get far fewer ear infections than dogs do. A weekly look is plenty for most cats. Just look, don’t dig.

When to clean versus leave alone

Healthy ears don’t need routine cleaning. The ear canal has its own balance of oils, wax, and resident microbes, and flushing it with cleaner on a schedule upsets that balance and makes infection more likely.

When cleaning is fine:

• Your vet is treating an ear problem and asked you to clean at home
• Water got into your cat’s ears (rare in cats)

When to leave it alone:

• The ears look normal
• There’s a lot of dark wax, or something seems off. Have a vet look first, because it could be mites or an infection
• The ear is red, swollen, or painful to touch. The eardrum may be damaged, and many cleaners are unsafe then

Warning signs that need a vet

Balance problems, circling, and eye flickering mean the problem may have reached the middle or inner ear, which is much more serious than an outer ear issue. They often make cats nauseous too, so see a vet promptly. For other causes of vomiting, see the vomiting guide.

A soft ballooned pocket on the ear flap is an aural hematoma, which is bleeding under the skin usually caused by your cat scratching or head-shaking from an underlying ear problem. It needs treatment, but more importantly, the underlying cause needs to be found or the hematoma will come back.

Common ear problems in cats

Mites and infections are the most common ear problems in cats. In young cats it can also be a polyp, and in older cats a tumor.

Ear mites

Ear mites (Otodectes cynotis) are the single most common cause of ear problems in cats, involved in 53-69% of cases of feline otitis. They’re especially common in kittens, multi-cat households, and cats that go outdoors or came from shelters or catteries.

The classic sign is dark, crumbly debris that looks like coffee grounds, with a lot of ear scratching and head shaking. Mites don’t jump like fleas. They spread by direct contact, and because cats groom and sleep together, if one cat has them, all the cats in the home usually need treatment.

Coffee-ground wax isn’t always mites, though. Yeast, bacterial infections, and polyps can look much the same, and sometimes it’s just normal wax. Your vet can look at a swab under a microscope and know which it is in minutes. Each cause needs a different medication, and if an infection is treated as mites, it keeps going.

Today’s parasite treatments work well, so weeks of daily ear drops are no longer the norm.

Bacterial and yeast infections

Otitis externa, inflammation of the outer ear canal, can be caused by bacteria, yeast (Malassezia), or both. Yeast is very common in inflamed ears, but it usually comes along with another problem.

That problem is often allergies. If your cat keeps getting ear infections, look for the allergy behind them, because more ear cleaning won’t help. Good flea control and finding food or environmental triggers do more than another round of ear drops.

Inflammatory polyps

Inflammatory polyps are benign growths that start in the middle ear or Eustachian tube and grow outward, either into the ear canal or the back of the throat. They’re most common in young cats, typically under 3 years old.

A polyp can look exactly like a chronic ear infection, and normal treatment won’t clear it. Ear problems that keep coming back despite treatment, especially in a young cat, may be a polyp. Finding it takes a proper look under sedation, sometimes with imaging, and treatment is surgical removal.

Ear tumors in older cats

In senior cats, years of chronic ear inflammation can occasionally turn into a tumor. The most common malignant one is ceruminous gland adenocarcinoma, which grows into nearby tissue but rarely spreads to other organs. If an older cat has discharge from one ear that won’t stop, or you can see a growth in the canal, have a vet examine it. More cleaning won’t fix it.

How to clean safely (when it’s actually needed)

Ask your vet which cleaner to use. It should be a gentle veterinary ear cleaner, not something improvised from around the house.

The basic technique:

1. Fill the ear canal with the cleaner (the bottle will have a soft tip)
2. Gently massage the base of the ear for 20-30 seconds (you’ll hear a squishy sound)
3. Let your cat shake their head
4. Wipe visible debris from the outer ear with a cotton ball or gauze

Never push anything into the ear canal. That includes cotton swabs, your finger, or the tip of the cleaner bottle. The canal bends 90 degrees inside the ear, and anything pushed straight down can damage the eardrum or pack debris deeper.

What not to use

• Hydrogen peroxide: irritates ear tissue and leaves moisture that feeds yeast
• Rubbing alcohol: stings and burns inflamed skin
• Water: retained moisture promotes infection
• Vinegar, witch hazel, or essential oils: irritating to inflamed ear tissue

Frequently Asked Questions

How often should I clean my cat’s ears? Most healthy cats never need their ears cleaned. A weekly look is enough. You only need to clean at home if your vet asks you to while treating an ear problem. Cleaning healthy ears too often upsets the balance in the canal and makes infection more likely.

Does dark wax in my cat’s ear always mean ear mites? No. Dark wax can indicate ear mites, yeast infection, bacterial infection, or inflammatory polyps. All can look similar. The only reliable way to diagnose is having your vet examine a swab under a microscope, because each cause needs a different medication.

When should I take my cat to the vet for ear problems? See a vet if your cat has head tilting, balance problems, repeated scratching, dark discharge, strong odor, redness, or a swollen pocket on the ear flap. Balance issues and head tilting may indicate middle or inner ear involvement, which is more serious.