I used a mild warm soapy water to wash the teats before milking. After milking they get a spray of fight bac. At any sign of chaffing, when the teats and bag are clean and dry you can apply an udder cream to heal the skin. Bruised, chaffed teats are painfull and can cause the goat to really act out and refuse to be milked. You don't want to create a problem milker from improper handling of her teats. Milk her firmly but carefully and treat the condition until it clears up. The warm soapy wash with a massaging motion before starting will help her to relax and ease the discomfort.