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Oxalic fogging.
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<blockquote data-quote="tristan" data-source="post: 13254" data-attributes="member: 30"><p>i read up on it, especially as some people had put good data up on it.</p><p>basically it boils down to how much varroa there is and the amount of visits.</p><p>the acid doesn't last long in the hive, its all gone by day 4. so it needs a repeat every 4-5 days. i would have to find the paper but someone had to do a huge amount of visits to get high mite levels down. if you do a full main 8 week treatment, thats at least 12 visits.</p><p>doing a part treatment mid season you could do less.</p><p>it also uses quite a large amount of acid. dry acid is only 1/3 the effectiveness of wet acid.</p><p>its best use is during broodless period.</p><p></p><p>[USER=207]@John B[/USER] good to see you have done it reasonably well and at least some testing. tho its better to have a before and after test so you know its the treatment thats done the job. i have struck 0 mite hives before.</p></blockquote><p></p>
[QUOTE="tristan, post: 13254, member: 30"] i read up on it, especially as some people had put good data up on it. basically it boils down to how much varroa there is and the amount of visits. the acid doesn't last long in the hive, its all gone by day 4. so it needs a repeat every 4-5 days. i would have to find the paper but someone had to do a huge amount of visits to get high mite levels down. if you do a full main 8 week treatment, thats at least 12 visits. doing a part treatment mid season you could do less. it also uses quite a large amount of acid. dry acid is only 1/3 the effectiveness of wet acid. its best use is during broodless period. [USER=207]@John B[/USER] good to see you have done it reasonably well and at least some testing. tho its better to have a before and after test so you know its the treatment thats done the job. i have struck 0 mite hives before. [/QUOTE]
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