Apple cider vinegar for warts on your finger

Ok I've had these warts on my middle finger for years and tried everything except surgery. My midwife told me to soak a cotton ball in apple cider vinegar and place it over the war, cover it and leave it on over night every night for a week. One of the warts finally came off today and the others are a bit more stubborn so I have to do more treatment. But here is an awesome way to get rid of the warts and cheap too!