Text Box: Earmites And Your Cat Text Box: Earmites are most common in the cat. Earmites appear as a dark, crusty substance in the ear canal. Earmites are often described as looking like ‘coffee grounds’. Text Box: Earmites Text Box: Just $15 for one treatment. Treatment includes thoroughly cleaning the ears and applying the medication. Text Box: Inside the ear of a cat with Earmites Text Box: Actual Earmite Text Box: We can treat your pet’s earmites with Acarexx at a low cost. Acarexx is the latest earmite treatment available. It generally take only one treatment to eliminate the mites (severe cases may require two treatments). Text Box: Earmites can cause severe itching. Cats will sometimes scratch so much that large wounds develop behind the ears.