Cover it with duct tape and keep it covered for a few days, replacing the tape when needed.... however that did not work for my daughter. I've also heard of taping a potato skin (white side to wart) for awhile... though I've never tried it. Liquid Nitrogen is expensive at the Dr.s office if you don't have insurance. This can be done at home, but there are safety precautions that MUST be adhered to, and you have to buy the liquid nitrogen. Even that did not cure my daughters wart, but after liquid nitrogen.... salicylic acid (applied daily and bought at the pharmacy) did end up working after a few weeks. It was almost as if the nitrogen weakened the wart and made it susceptible to the acid. Hope this helps.