The ears of dogs are warm and moist. This is precisely why they are breeding grounds for bacteria, ear mites, and yeast. It is, therefore, vitally important that you make sure your dog's ears are kept as clean as they can.  
But before you clean up it, you need to fully grasp how to inspect it. A healthy exterior ear of the dog needs to look light pink in color, should be tidy and shouldn't emit some foul smell. Search for any excess of dark wax buildup in the ear. A bit of bit of dirt as well as wax is okay. Nevertheless, if there's excessive amount of wax buildup, it might indicate the presence of ear mites.  
If perhaps your dog is actually scratching his ears way excessively, then simply examine the interior together with the external part of his ear. Look for nicks, scabs, cuts, infection or mites. If you think that there is yeast or bacterial infection or maybe ear mites, then bring him to the vet as fast as possible.  
Nevertheless, in case you believe that there's no infection and no mites, it is time to thoroughly clean the ears. Many vets recommend cleaning the obvious part of the ear only. That's, just clean the debris and wax there. This can be done utilizing a soft cloth or perhaps a cotton ball. Simply dip them in an ear cleaning solution and also clean your dog's ears. Stay away from cleaning the ear canal. You can ask your vet in case you need to wash deeper into the ear. There are solutions which the vet may prescribe for this purpose. These are gently squirted or even dropped into the ear canal.  
Nevertheless, most vets suggest that if the dog has had virtually no history of ear issues, then accomplishing this is only going to produce problems. If you do wish to purify the canal, then clean it initially and afterwards only proceed towards the external ear. Ensure that you allow your dog's ears to dry out entirely. But if the dog breed of yours is but one with those long ears, Guide (https://www.federalwaymirror.com) and then just pin the ears together with the top for sometime. This can help in drying the ear canal and protecting against any infections.