Complete eradication of ear mites in cats requires a series of treatments and preventative measures. Here are some key steps:

Cleaning the ear canals: First, use pet-specific ear cleaner or ear drops to clean the cat's ear canals. This helps soften and remove secretions and dirt from the ear canals. During cleaning, be careful not to insert the cotton swab too deeply to avoid damaging the cat's ear canals.
Treatment with medication: After cleaning the ear canal, it is necessary to use a medication specifically for treating ear mites, such as those containing imidacloprid, selamectin, or moxifloxacin. These medications can effectively kill ear mites and prevent their recurrence.
Regular deworming: Regular deworming is crucial during ear mite treatment. Choose a reputable external parasite medication and administer it according to the instructions or your veterinarian's advice, based on your cat's weight and age.
Adjusting diet and supplementing nutrition: During treatment, you can appropriately adjust your cat's diet to supplement its nutrition and enhance its resistance. A healthy body helps your cat recover faster.
Maintaining a clean environment: Keeping your cat's living environment clean is also key to preventing ear mites from recurring. Regularly clean your cat's living environment, disinfect it with professional disinfectant, and ensure that there is plenty of natural light indoors so that your cat can sunbathe and use the bactericidal effect of ultraviolet rays to prevent ear mites.
Regular check-ups and observations: During treatment, it is recommended to take your cat to the veterinary hospital regularly for ear mite microscopic examination to ensure the treatment's effectiveness. If no mites are visible during the microscopic examination, medication should be continued for another week to prevent ear mite recurrence.