This week I took Rustan to the vet, as he's gotten some kind of trouble with one of his ears. It's not that he scratches, but he blinks his left eye in a way that indicates that all's not well with it.

The nice vet prescribed some kind of ear drops/liniment. He didn't have lots of ear wax, nor could any mites be seen. The drops really helped, in less than two days he stopped being irritated by the ear.