I'm sorry to hear that you are having these problems! It's probably not what you want to hear, but most likely both of these dogs will need to see a vet in order to get better.
There are many different types of ear infections.
What you have described for BOTH dogs sounds like an ear infection. If I see an excess of wax production to this extent it usually is an ear infection. While most will have an odour, not all do.
It is rare for an ear infection to be caused by just yeast or just bacteria. I have had a few patients in which their owners have tried to treat an infection with an over the counter yeast medication and we have ended up with a raging bacterial infection.
If this were my case I would be doing, as Dr. Drew recommended, a laboratory test to determine what type of bacteria and/or yeast is present and then administering the appropriate medication. There are very few ear infections that will get better with over the counter medicines.
I hope this information helps! If you have more questions about this concern, just hit reply and I will respond as soon as I can. I am in between appointments this morning, so there may be a delay before I reply. Or, if my answer has helped you, please hit accept.
The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.