In reply to iksander:
My method as teenager was as follows:-
* try salactol - did naff all the the wart and seemed to melt the surrounding skin instead
* decide you don't want the wart any more and remove... this was done using my teeth
* wart removed, roots in all, remaining large hole bleeds quite a lot
* mother not impressed with teenagers work!
* wart doesn't return, result!
* 25+ years later small scar remains on thumb