I've not had to deal with ear mites so far, but I'm assuming it will all depend on their life cycle as to how quickly it clears up. When did you treat him with Revolution? Does it say anything in the leaflet that usually comes with these treatments? I'm sure the spot-on treatments I use have a leaflet that goes through each parasite it treats and how often you should apply the treatment to get rid of anything in particular.
If you don't have the leaflet I'm sure you can google it as most of these things can be found online these days.
in fact here you are, I just googled it, it might just be debris still in his ears:
Ear Mite Treatment in Dogs and Cats For the treatment of ear mite (O. cynotis) infestations in dogs and cats, Revolution should be administered once as a single topical dose. A second monthly dose may be required in some dogs. Monthly use of Revolution will control any subsequent ear mite infestations. In the clinical field trials ears were not cleaned, and many animals still had debris in their ears after the second dose. Cleansing of the infested ears is recommended to remove the debris.
_________________ Clare Hendrix and Jagger, Brown Marble Boys (born 18 August 2013) Hampshire, UK
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