I know that you don't want to go to the vet, but you really need a professional to take a look at your dog's ears and determine what's wrong with them. They could be dirty, they could be infected, he could have mites...the list goes on. You shouldn't be just throwing stuff down there unless you really know what is going on.

Also, how are you cleaning his ears? A cotton ball or Qtip is fine on the outside of the ear canal, but if you try and clean the inside you are only pushing the wax and gunk down firther and further infecting the ear or making infection more likely.

Does he have a muzzle? If you take him to the vet, muzzle him while the vet is touching him. It is not cruel, and prevents both the vet and dog from harm.