I tried MAQS in July and the treatment failed to control mites.  I tried 
it again on 160 hives in August with better results.  I used one and a 
half strips per double-deep hive, and two strips for triple-deeps.  I 
saw an immediate mite drop that amounted to hundreds or thousands of 
mites per hive after one week (did not see much mite drop at all back in 
July.)  I saw no queen problems in hives treated with one and a half 
strips, but some dead queens in the larger hives treated with two 
strips.  After treatment I saw some brood emerging with DWV caused by 
varroa parasitism during developement, but no mites alive on the 
emerging brood after treatment in the double-deep hives.  It appeared 
that the treatment did not work as well in the small number of 
triple-deeps I treated.

I am going to do another 80 hives (some of which are definitely on 
death's door) later this week.   These bees are in hot temperature 
locations so I will observe how well the warmer hives cope with it.

--Jeremy Rose
San Luis Obispo, CA

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