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Message: <blockquote data-quote="tristan" data-source="post: 13783" data-attributes="member: 30">i can't remember if this was discussed years ago.[URL unfurl="true"]https://www.blog-veto-pharma.com/en/potential-interactions-between-oxalic-acid-and-amitraz-in-controlling-varroa-mites-2/[/URL]" their combination can lead to reduced efficacy due to the rapid degradation of amitraz in acidic environments."<a href="https://www.sciencedirect.com/science/article/abs/pii/S0039914098002379" target="_blank">https://www.sciencedirect.com/science/article/abs/pii/S0039914098002379</a>  Kinetics and mechanism of amitraz hydrolysis in aqueous media by HPLC and GC-MS"Amitraz is unstable in the whole pH range, undergoing faster hydrolysis at acidic pH values (at pH<2 the degradation is almost instantaneous)."so not a good idea to use amitraz treatment (apivar/apitraz/amiflex) as well as any acid treatment (oxalic, formic, thymol etc) together and to leave enough time for one to dissipate before using the other.</blockquote>

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