Have Cat Questions? Ask a Cat Vet Online.
We use Milbemite to treat ear mites in kittens/ cats. You may be able to order it online, but many prescription sites require a vet to authorize it. You may end up having to get it from a vet clinic. An alternative, would be to use Revolution topically and put a drop in each ear. That has some anti-mite activity as well.
I hope this helps, let me know if you have any other questions.