Not necessarily.  A behavioral disruptor such as amitraz does not need to kill any mites to be effective, if applied before the mite level gets too high.



Thinking, about Petes post that they are killed by thymol,  The test outlined seemed to be a closed vial?  What I am wondering is if in an open hive the fumes of thymol are enough to just screw up the olfactory sense of phoretic mites? Would that not solve the issue of bee removal vs fumes?  Large exposed surface of the crushed thymol creating enough vapors to mess with reproduction of mites, hence the long term exposure for effectiveness, also bodes well with Randys work this summer that 50g is better than 25,  and the rim helping fume dispersal to be more even. 
 
Maybe not enough fumes for direct kill, which would mean longer exposure needed?


Charles

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