War on Warts

We've been at war the past few months.  We've declared war on Kirk's warts.  It's been an ongoing battle, sometimes I think we are finally winning, and the warts are on the retreat, almost defeated but then they make a ravenous comeback.  We've tried everything possible.  Over the counter medicines, apple cider vinegar, duct tape, crushed vitamin C made into a paste.  The Dermatologist has tried freezing them a few times, and lazering them.  These sucker's are the most stubborn viruses I've ever seen.  Each time we go into the dermatologist they really look like they are dying, then a couple of weeks latter they heal up and are there as good a new.  I really hope to get rid of them before school starts in the fall, Kirk has become self conscious about them.  If anybody has some thoughts, or had experience with this before please let me know.  I"ve tried everything I could find on the Internet.  Duct tape had the best results, but it irritated the skin around the wart, to the point that Kirk was crying.  We have discontinued that treatment.  Right now I'm just keeping some wart medicine on them until we go in to lazer them again on Monday.