Have a wart? Say goodbye drug store, hello hardware store. According to several studies (here's one), duct tape is as or more effective in treating the common wart than the standard approach of freezing them off with liquid nitrogen. There are other studies that have failed to corroborate these results, but the fact is that whether it pans out or not someone had to apply for that first grant. How many times do you think they had to send out applications before someone gave them the funding for that one?