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Message: <blockquote data-quote="tristan" data-source="post: 13996" data-attributes="member: 30">as alastair mentioned varroa was easy in the early days, but reinvasion was the big problem. some of the beeks here used to treat constantly during the first few years.but the big problem came a bit latter with beeks underdosing and most used the same strips. which resulted in the first big resistant mite scare here.having reinvasion at the same time as resistant mites is a major problem. most alterative treatments do not handle reinvasion. so its probably a case of running dual treatments. synthetic to deal to the bulk of the reinvasion then organic to deal with resistant mites.also heat plays a factor in treatments, plus the length of a season. every aera will have to work out what works when.nz is still very much in the learning curve. nz's bee industry implosion and subsequent loss off half its hives and beeks, has brought reinvasion back.</blockquote>

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