If you notice black, debris-like material in your cat's ears, it's highly likely to be ear mites. It is recommended that pet owners use a pet-specific ear cleaning solution to clean the cat's ears.

If your cat has a lot of dark material in their ears, it’s best to have an ear secretion test done at the veterinarian. This will help determine the cause of the black discharge. Common causes include ear mites, bacterial infections, and fungal infections. Treatment will depend on the cause. Ear mites are ear canal parasites that cause severe itching in cats. They can also lead to secondary ear infections. If not treated promptly, the cat may injure their skin while scratching their ears.
We recommend using a mite-removing ear drop like [brand name]. This product is designed for both dogs and cats and is very effective in treating ear mites in pets. It can effectively remove earwax and dirt from the ears, keeping the ear canal clean and reinforcing the skin inside the ear. It also contains antibacterial and anti-inflammatory ingredients, which can effectively prevent and treat ear infections in dogs and cats. This can help relieve ear itching and excessive scratching. This product has a mild, alcohol-free formula, a pleasant fragrance, and a soft tube design that cleans deep without damaging the ear canal. It's an excellent pet ear cleaning solution.
Can Cat Ear Mites Heal on Their Own?
Typically, ear mites in cats will not heal on their own. If left untreated, the condition may worsen and lead to other issues such as inner ear infections. If you suspect your cat has ear mites, you should immediately clean the outer ear canal and use a specific cat ear mite treatment. You can use ear cleaning oil to clean the outer ear canal. Do not use alcohol. Also, avoid pushing debris into the inner ear canal. This can cause an inner ear infection.