In most cases, people use electrocautery machine to get rid of warts and skin tags of different sizes. The procedure is sometimes painless; however, they leave a wound which may take time to heal. Usually, healing time takes about 1 to 6 weeks, but that depends on two factors â the magnitude of the wound and size of warts or lesions. It is easy to say that you spend more time healing from an electrocautery procedure if the warts are big.