Be aware that plantar warts are different than regular warts. They have a deep core that penetrates well in to the sole of the foot, and can often require a procedure to remove the core before they will completely go away. Dh had one just after we met, and the duct tape, freezing ect would take care of it for a while, but if kept coming back. The doctor explained that if the core is not killed by the treatment, it will just regrow. I owuld try the noninvasive treatments first, but go into in with the knowledge that it may have to be cut out, depending on how deep the core is. Dh's was about 2cm-3cm into his footbed.