Varroa Management
Varroa Treatment Protocols: Timing, Temperature, and Technique
Choosing the right treatment is only half the job. How and when you apply it determines whether it actually works. Here are the full protocols for the three main treatment categories.
Knowing that you need to treat is the easy part. Knowing how to apply the treatment correctly — the right temperature window, the right colony state, the right dose and duration — is where most treatments succeed or fail. This article covers the full protocols for the three primary Varroa treatment categories: oxalic acid, formic acid, and amitraz. Pre-Treatment: Always Wash First Before you apply any treatment, do an alcohol wash. A baseline count gives you two things: confirmation that treatment is actually warranted, and a reference point for evaluating efficacy afterward. If your wash comes back under threshold — 2% in summer, 1% in late summer before winter bees are raised — hold off. Treating unnecessarily exposes your colony to chemical stress and builds selection pressure for resistance. Document the date, colony, wash result, and what you plan to do. You'll need this data in 3–4 weeks. Oxalic Acid Vaporization (OAV) Oxalic acid vapor kills phoretic mites on contact. It does not penetrate capped cells. This constraint defines everything about when and how to use it. Broodless Protocol A colony with no capped brood has 100% of its mites in the phoretic phase — all accessible to oxalic acid
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Integrated Pest Management for Varroa: A Year-Round Strategy
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Integrated Pest Management for Varroa: A Year-Round Strategy
IPM means using monitoring data to drive treatment decisions — not calendar dates. Here's how to build a Varroa management calendar that keeps mite loads below threshold year-round.
How to Monitor Varroa: Alcohol Wash, Sugar Roll, and Sticky Boards
Monitoring is the only way to know whether your Varroa load is at a safe level or approaching colony-threatening territory. Here's how to do an alcohol wash — the gold standard — and when each method is appropriate.
When Varroa Treatment Fails: Resistance, Reinfestation, and What to Do
You treated on schedule, but the mite count barely moved. Here's how to distinguish true treatment resistance from reinfestation, application error, and timing problems — and what to do about each.