Ever had a splinter you could not  quite get all of it out???. My father had a salve that looked like tar but it worked!!!! I ask the pharmacist and she knew exactly what it was. Try putting a dab of Ichthammol Ointment on it then a band aid and when you wake up it WILL be in the bandaid  !!!!! WHAT ??? Try it and let me know.!! DO NOT keep digging use this salve.   ERIC