The work of beekeeper and MSBA member Bob Noel of Cumberland, Maryland, was the subject of the cited newspaper article. He wrote a letter to the editor this year in either ABJ or Gleanings describing his experiments with the various essential oils. Sorry, but I don't recall which or when. He also gave a very good presentation to the Maryland State Beekeepers Assoc winter meeting in January this year. If anyone is interested to invite him to speak at your meeting, I can ask if he would be willing and I can put you in contact. Regards, David Morris, President Maryland State Beekeepers Assoc Laurel, MD