I recently returned from Beekeeping for the Future in Edmonton.  

Two presentations which mentioned MAQS were made at that workshop.  One study from Ontario, partly sponsored by NOD, showed good efficacy and minimal bee and brood damage.  A great deal of attention was made to the fact that MAQS can kill mites in sealed brood.  (Those who have read BEE-L for a decade or morre may well recall the never-ending discusssions about formic and that the same claim is made for all formic treatments to a greater or lesser extent).

The other presentation, of an entirely independently financed and designed study, presented by the Saskatchewan Provincial Apiarist, compared MAQS (used in accordance with the instructions) and other formic treatments used by beekeepers.  MAQS in that study had the poorest efficacy of the four tried -- less than 50% -- and caused serious brood damage.  (At the time the trial began,when they purchased test strips, the experimenters report that they were assured by NOD that they had the latest version of the product, and the one which was being marketed to beekeepers.  Near the end of the trial, NOD informed the experimenters that the product supplied was not the product sold to the beekeeping public). 

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