My vet still gave her some medication for ear mites just incase and checked an sample under the microsope. All she did was place the medication for ear mites on the back of chelsey's neck
I also had to use drops in chelsey ears twice a day for three weeks. It was suppost to be for two , but it took longer to clear up. But she is all good now. she has not had an other ear infection since.
I would bet that what your vet put on the back of your pup was Revolution. In addition to treatment for heart worms, it is also a treatment for fleas, ticks, and ear mites.
Another treatment is two drops of Frontline spray in each ear once a week for three weeks. If you suspect ear mites, Odomax should also be used in the ears, and possibly an oral antibiotic. My vet lets me get what I want at animal supply, and I do my own treatment. I use Clavamox for the antibiotic. I do so much rescue work with everyone else's rejects that things like this are common for me.
What I have to be careful with is that my rescues don't infect my house dogs. I use the Revolution monthly on my dogs.[/B]