In my early twenties, I picked up a case of the crabs in Israel from working in the Hen Houses on a Kibbutz.  Washing, shampooing, and shaving didn't do the job.  Then I bought a can of Bug Spray and sprayed the area in question two days in a row, before going to work in the fields.  It burned like the 'H***!***', and skin peeled off in parts, but it sure as shooting got rid of those pesky little critters!  Ain't has no problem of that sort since!
And no, this was BEFORE I met my wife and sired five children!
DPH

  STOP PALESTINIAN CHILD ABUSE!!!! ISLAMIC HATRED OF JEWS