After a bath, gently clean the outside and back of baby's ears with a moist cotton swab. The important thing is to avoid pushing the swab into the ear canal: It can damage the eardrum and even cause hearing loss. Removing the wax isn't necessary; earwax protects your child's ear canal by sealing out moisture, dust, and bacteria. (Besides, scraping it out often just causes the ear to produce more.) If your child has excessive earwax that you think might be interfering with his hearing, consult your pediatrician.