Most of thes procedures can be performed in your practitioner's office. Cold cautery ,like liquid nitrogen, destroys the warts by freezing. This chemical should be washed off in 4-6 hours after applied or as specified by your practitioner. It should not be used on the cervix or by pregnant patients. This chemical does not have to be washed off after application.
Hot cautery is a method in which the warts are burned off with an electrical instrument.
While these treatments can destroy visable warts, the wart virus can remain in nearby normal-looking tissue after treatment. This virus can produce new warts, sometimes weeks or even months after the old ones have been destroyed. In that case, you'll need to return to your practitioner for another treatment. You may feel frustrated or depressed when new warts appear, but repeat treatments on a weekly basis often solves the problem. Certain types of genital wart lesions have been linked to changes in cervical tissue that, left untreated, might become pre-cancerous.