To remove powdery mildew stains from leather, wipe them with a mixture of equal parts rubbing alcohol and water. When the leather dries, rub it with a conditioner like Neatsfoot oil or castor oil.
To remove powdery mildew stains from leather, wipe them with a mixture of equal parts rubbing alcohol and water. When the leather dries, rub it with a conditioner like Neatsfoot oil or castor oil.