Has a low ph of 3.0 with no antibiotics or corticosteroids. Step 2 in a 3 Step Ear Care Program. Also available in convenient pre-soaked pads Available in 4-ounce, 8-ounce, 16-ounce, and 1 gallon sizes R-7 Ear Cleaner by Miracle Care is a safe and effective for both dogs and cats. Use R-7 Ear Cleaner as a grooming aid at least once a week to help keep the ears clean and reduce odor. Apply freely to the ear before or after bathing or swimming. Removes ear wax.