A study was conducted by a military pediatric clinic in Cincinnati hospital a few years ago and the results showed that duct tape was more effective than cryotherapy (freezing) warts.
A total of 51 patients (age range, 3-22 years) completed the study. Patients were randomized using computer-generated codes to receive either cryotherapy (liquid nitrogen applied to each wart for 10 seconds every 2-3 weeks) for a maximum of 6 treatments or duct tape occlusion (applied directly to the wart) for a maximum of 2 months. Patients had their warts measured at baseline and with return visits.
Of the 51 patients completing the study, 26 (51%) were treated with duct tape, and 25 (49%) were treated with cryotherapy. Twenty-two patients (85%) in the duct tape arm vs 15 patients (60%) enrolled in the cryotherapy arm had complete resolution of their warts. The majority of warts that responded to either therapy did so within the first month of treatment. The results showed that duct tape therapy was significantly more effective than cryotherapy for treatment of the common wart. Hopefully the warts were on parts of the body that were able to be covered. Am sure some enterprising soul will come out with flesh colored duct tape and charge twice as much, because it is 'medical'.