Many people advise adding a cup of acetic acid (vinegar) to one's laundry during the clean cycle. From my calculations, considering one cup of acetic acid and a top gallon machine (at 40 gallons), it would seem this would completely dilute the concentration next to nothing.
Is this correct or am I missing something? Someone had mentioned something about acetic acid being a weak acid, but I'm not sure what that means in this context.