my father in law recently got attacked by a large number of wasp bees , he has several sting sites, was treated at his local er , but 2 weeks ago , yesterday he is having pain and swelling at each sting site ,. what would be the best way of removing the stingers from the site for him , that is what we are thinking the er did not remove the stingers from sites and he is allergic to bee sting? he is taking benedral, and antiflamatory med given to him by his doc