I Have Warts On Fingers On Both Hands.. It Is

I have warts on fingers on both hands.. It is going on increasing.. one by one.. I also consulted doctor. He did some treatment with electric(things) by heating( dont know exactly the name). But even after that surgery, warts are coming again.. I have been using corncaps and HH-SALIC ointment. There is no pain initially..but after covering them with corncaps, it is paining for 2-3 days. Can u suggest best way to get rid from this.