If tear stains are super severe and super dark and have an odor, then it's likely a yeast infection - and no amount of cleaning will do a thing; you'd need to see a vet for an anti-fungal.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |