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Message: <blockquote data-quote="Alastair" data-source="post: 13492" data-attributes="member: 13">Don't like it.You mentioned user error as in over or under dosing. But what I think is a problem with these several shot treatments, is the beekeeper not getting back for the next shot in the right time frame.I discovered this personally when I tried to treat all my hives with oxalic acid vapour, which had to be done every 3 days, seven times. You get held up by weather, other stuff that comes up, or whatever, and don't get back in the right time frame. The whole treatment course then falls apart, as another generation of mites has been able to get back into brood cells and reproduce.My view, if there is anything could contribute to amitraz resistance in varroa mites, it would be something like this. In the US for many years they have been (illegally) applying amitraz to hives via shop towels, which is similar to Amiflex in that to do a good job it had to be applied twice, in the right time frame. Dose was also dependent on the whims of the beekeeper. Can't say it's related, but they do have amitraz resistance in the US now.</blockquote>

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