Allen History : Apistan , coumaphose ,menthol , grease patties essential oils , FA , TerramYcin from 1995 to early fall 2000' Modified Sbb since 1999. TM encountered once and checked by lab. Total wipe out .TBH kenya type > . Infestation 100 % . was a swarm inmherited . Behavior : Bees look fine but cannot fly , congrugate and perish. ( Well observed , location on flat white roof. ) No lab tests after ever . Year of tm 1995. During applied miticides heavy drop onto sticky boards or catchboard below screen. Estimated drop after / during treament with Coumaphose 8000. Since 2000 used FGMO , cords and fog . Fogger did not work right . emulsion and cords was not quite applied properly . So. whatever influence it had : Unknown. Therefore used coumaphose once more to be sure . Began fog and emusion late fall/ winter 2000 into 2001 . Amount of colonies from 16 to max of 27 . Losses due to starving , too small and weather causing no gathering when required . Starved . ( March 2002 ) Location Wash. state Olympic Peninsula . No phoretic mites detected at any time . Minimal mites found in drone cells. Removable checkboards afford daily check of "drop off's" . This is not stricktly adhered to . Sometimes 2 weeks pass without . Until 4 weeks ago all drop offs are under 10 .alcohol checks = 0%. One colony 50 daily incl males and immature females .. In the beginning of drop some mites were alive . Now all dead ones . Alcohol check :2.5 %. Now drop diminishing to low teens . All other colonies drop either nil or below 5 or below 10 . No significant drop after fogging. The frequency of the emulsion cords depends on the ferocity to clean the cords by the bees . I found it required at a 2 week interval. Now use 4 cords per brood box ( Deep) No losses due to mites before or after FGMO other than mentioned above . No mites found with alcohol wash in dead bees on the screens. No foul brood of any kind. Nosema prior to FGMO. No residue detected by visual ( Which meas nothing ) No taste of Oil either in honey.Fogging two week interval plus / minus few days .Continous application during honeyflow also. Some colonies have some 4.9 and now the frames / combs are positioned by the "Housel " Method . I find the method of FGMO very effective and also must recommend the two kinds of application . One appears to compliment the other . In any case . I am still testing methods which are different and appear not to adversly affect the bees , also are not too expensive . The fogging device must be applied properly as per instructions . At this time I find no adversity and the bees are calm , are gathering still pollen and possibly nectar. From where :???? . This year they collected heavy stores for themselves . I do not feed syrup . Never saw "chewed " Cappings or removed brood to an extent noticable . No crippled wing syndrome since 2001 . And those were very few. Drones disappeared to where ??? Some are still with the colonies . Yellow jackets still a problem this year . As mentioned in another post , see Beesource.com. for lab reports and pertinent details of the testing done by Dr Rodriguez et al. Regards JDF