at one point in my life i had over 40 warts on my knees & hands. it was so so so gross. otc treatments, freezing, cutting, etc... they just came back over & over.
finally when i was about 14 they all just went away within the span of about a month. crazy, eh?
about 5 years ago i got a planters wart- i was on a boat in the middle of nowhere- and used tea tree oil for about a week. it then just fell off. weird.