Hello An interesting note to the cell size controversy is that a varroa tolerance stock has already been researched, documented and achieved in the same geographic region where the cell size method for the control of varroa originated. In the August 2000 edition of the American Bee Journal, the Report entitled "Producing Varroa-tolerant Honey Bees form Locally Adapted Stock: A Recipe" was published. It is the latest in a series of reports from these authors. Both the cell size method and this recipe emphasize the need to selectively use and propagate locally adapted stock shown to be varroa tolerant through a forced natural selection. Although much emphasis of the cell size method involves the preparation and introduction of a smaller foundation, the real economic impact involves the selection, propagation and maintenance of a varroa tolerant stock demonstrated to retrogress to the smaller size cell and survive mite infestation untreated. Colonies that cannot retrogress or survive are lost. The Recipe published in the Journal is a proven approach to achieve varroa tolerance. Other methods of varroa control such as incorporating varroa tolerant stock, integrated pest management techniques and equipment modification such as smaller cell size foundation could easily be incorporated into this recipe. Everyone could begin with this recipe now. Best Wishes Dennis Murrell (seeing that truely the squeeky wheel gets most of the grease)