They will use liquid nitrogen to freeze the wart off; just be aware that it may take several applications.

Successful removal typically requires several weeks ... treatment that involves your dermatologist freezing the wart using ...

Liquid nitrogen is kept within insulated containers and has to be handled with care. It is used in medical environments such as cryotherapy to remove unwanted skin, such as warts, moles ...

Liquid nitrogen, which has a boiling point of -196C, is used for a variety of things, such as a coolant for computers, in medicine to remove unwanted skin, warts and pre-cancerous cells ...