Yeast in ears, what to use?

I took my cat to the vet and was given Entederm ointment for her ears. This stuff is so messy, now she shakes her head probably because this stuff is really greasy, her whole head is greasy after two applications. I'm supposed to use this stuff for seven days.

Is there something else out there that I can buy over the counter that will treat fungus/yeast in cats ears?

My vet used a goopy gel-like med in my kitty's ears when she had a yeast infection.  It took about 2 weeks to wear off/be absorbed.  I'm not sure of the name, though. I'd have to look back through her records to find it.

I'm not sure of anything over the counter but Naku was on Animax (I think that's the name) and it made him greasy for a few weeks but worked like a charm. I used kitty wet wipes to clean up his fur near his ears and that helped a little, but he was still a little greasy. It'll go away though.