Vet Solutions-Ear Cleaning Solution is a very good product for cleaning the ear..
here is from their website:
Ear Care
Ears are an extension of your dog or cat's skin and may need to be routinely cleaned to prevent infections or remove waxy buildup. Ear cleaning is also an important part of treating ear infections. Always have your pet's ears examined by a veterinarian before putting anything, including cleanser, into them. VET Solutions Ear Cleansing Solution will clean, gently dry, and deodorize the ear. It also produces an unfavorable environment for yeast and bacterial growth. To clean your pet's ear, gently hold the floppy part (pinna) of the ear upright and dispense Ear Cleansing Solution into the ear canal until full. Then massage the base of the ear near the head to help break up wax and debris. Allow your pet to shake his or her head removing most of the cleaner and some debris. Then using cotton balls or paper towels, gently dry the ear as much as possible. Clean as often as directed by your veterinarian.