It is not clear why duct tape helps get rid of warts, according to the American Academy of Dermatology. Scientific research has not shown conclusively that duct tape alone or in conjunction with other treatments removes warts, Mayo Clinic states.
To use the duct tape method, an individual puts a piece of tape about the size of the wart over the bump, explains WebMD. The tape should remain on for six days, so the piece must be replaced if it loosens. After six days, the patient removes the tape, soaks the wart in water, and uses an emery board or pumice stone to gently rub the area. The tape is not replaced that night. However, the patient starts the process over again on the following day. Treatment should not continue past two months.