I’m not trying to be flip, i.e. discounting the great human aspect of this treatment, but my vet gave me this same exact “prescription” for my Toy Poodles’ ears when they had ear infections. Worked wonderfully.
My own doctor gave me a prescription for ear drops. Those worked well, too, but the vinegar & alcohol were far less expensive. I figure if my Poods can handle it without problems (they’re terribly babyish!), I can, too!