I've had plantars warts come and go since I was a kid, and freezing has often worked for me (done by a dermatologist) but not always. My kids developed plantars warts and after their freezing didn't work, I resorted to duct tape. It's a bit of an effort, but it did work.
Right now I have a big plantars wart that I've had frozen 3 times and this last time I told the derm I'm done if this doesn't work. But now after reading this thread I'm going to try nail polish.