Dave Eyre wonders why his Southern friends cannot enjoy the benefits of Formic Acid. The reason is called bureaucracy, regulation, protecting the health of the public, or whatever you want to call it. Distilled to its essence, the use of Formic Acid as a mite control agent is still illegal in the United States (If anybody has heard to the contrary, please post the news). Believe me, I'd love to see Formic Acid mite treatments become legal in this country. Having a good idea banned by regulation works both ways: I understand that using Ethylene Dioxide for fumigating American Foulbrood contaminated equipment is illegal in Canada, while I have been using fumigated equipment quite successfully. W. G. Miller Gaithersburg, MD