Last updated: August 21, 2026
Apivar is the option people reach for when the weather has stopped cooperating. It does not care whether the week is hot or cool, there is nothing to mix, and the strips go in and stay in. That convenience is exactly why it needs a bit more thought than most products, because a strip that lives in the brood nest for weeks has to be scheduled around the honey crop rather than dropped in whenever it occurs to you.
This is a look at what Apivar is, where in the beekeeping year a backyard keeper with one to four colonies actually slots it in, and which parts of the decision are yours versus which parts belong to the EPA-registered label. Dose, strip placement, how long they stay in, how many times a year, and anything to do with honey supers all come from that label. We describe the shape of the decision, not the numbers.
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Quick Answer
Where do Apivar strips fit in the beekeeping year?
- Apivar is an amitraz strip product, EPA-registered, hung between brood frames where bees walk across it.
- It is a contact product, so it reaches mites on adult bees rather than mites sealed under cappings.
- It has no temperature window to work around, which is why keepers use it when the weather rules out a formic treatment.
- The strips stay in for an extended period, so the honey supers question and the removal date are label matters you plan around before you start.
Bottom line: Apivar is the low-drama option on weather, and the high-planning option on timing, because the strips occupy the brood nest for weeks.
What Apivar Strips Are
Apivar is a plastic strip impregnated with amitraz, a synthetic acaricide, released slowly as bees brush past it. The strips hang between frames in the brood chamber so the cluster has to walk over them during normal traffic. It is EPA-registered and sold in pack sizes from a few strips up to yard-scale boxes.
The appeal for a backyard keeper is that there is nothing to measure, nothing to vaporize and no weather to dodge. You open the pack, place the strips as the label directs, note the removal date on your calendar, and get on with the season. That simplicity is genuine, and it is also why the product gets used carelessly.
Contact, Not Vapor
Because amitraz transfers by contact rather than moving through the hive as a gas, it works on mites riding on adult bees. Mites sealed inside capped brood cells are untouched until those bees emerge, which is why the strips are designed to stay in long enough for several rounds of brood to hatch. That single fact explains most of the label design and most of the mistakes people make with it.
Where It Fits in the Year
Most backyard keepers use Apivar as either the post-harvest treatment in late summer, once supers are off and before winter bees are raised, or as an early spring cleanup before the flow builds. Both windows share a feature: no honey crop is on the hive, and there is enough time to complete a full application before the next stage of the season starts.
Late summer is the more common choice, because the mites have been compounding all season and the bees being raised in September and October are the ones that have to carry the colony to spring. A colony that raises its winter bees under a heavy mite load is the classic February deadout, which is the pattern we walk through in reading a hive that did not make it.
Plan the Removal Date Before You Start
The one scheduling trap is forgetting the strips. An extended residency means the removal date can land in the middle of a busy month, and leaving strips in past the label period is the practice most often blamed for pushing mites toward resistance. Write the removal date on the hive lid in marker, put it in your calendar, and if you use an app for records, log it there too.
Supers and the Label
Whether honey supers may be on the hive during an Apivar application is set by the label, not by convention, and there is no version of this question that a website should answer for you. Read that section of the label for the product in your hand, before the first strip goes in, and plan the harvest around it rather than the other way around.
This is worth taking seriously because a mistake shows up in the honey rather than in the bees, and there is no correcting it afterward. Our guide to what the label allows with supers on explains how to read that section without guessing, and when to harvest honey covers the timing from the crop side.
Resistance and Rotation
Amitraz has been the workhorse of American mite management for years, and the concern raised most often by extension services is reduced efficacy where the same active is used season after season without checking whether it still works. The University of Minnesota Bee Lab and Penn State Extension both publish material on rotating actives and on monitoring, and that is the right place to take this question.
The practical version for a backyard keeper with a handful of colonies is straightforward. Count mites before you treat and count again after, because the after-count is the only thing that tells you whether the product did what you paid for. If the number barely moves, that is information, and it is worth raising with your local association or state apiarist rather than simply repeating the same treatment.
Counting Is the Non-Negotiable Part
An alcohol wash or a sugar roll takes a few minutes per colony and turns mite management from belief into measurement. It is also the only way to know whether you needed to treat at all. Our walkthrough of counting varroa mites covers both methods and what the sample tells you.
What to Have on the Bench
Apivar itself needs no equipment beyond the strips and a way to handle them cleanly, but the surrounding job does. A mite wash jar for the before and after counts, disposable gloves so nothing goes back into the house on your hands, and a sticky board if you want to watch mite drop while the strips are in.
Apivar Against the Alternatives
The comparison worth making is not about strength, it is about which constraint fits the week you are standing in. Apivar gives you a wide weather window and asks for planning. Formic acid gives you capped-brood reach and asks for a forecast. Oxalic acid gives you a quick knockdown and asks for a broodless period.
| Option | Active type | Weather sensitive | Main planning demand |
|---|---|---|---|
| Apivar | Synthetic amitraz, contact strips | No | Extended residency, removal date |
| Formic Pro | Organic acid, vapor | Yes | Daytime temperature window |
| Oxalic acid | Organic acid, contact | Somewhat | Broodless window, operator gear |
| Thymol products | Botanical, vapor | Yes | Temperature range, colony disruption |
For the full field laid out side by side, see our overview of varroa mite treatment options, and for the head to head, Apivar or Formic Pro.
Frequently Asked Questions
How long do Apivar strips stay in the hive? The application period is set on the EPA-registered label, and it is long enough for multiple rounds of brood to emerge. We do not publish the figure because labels are revised. Note the removal date the day you put the strips in.
Can Apivar be used with honey supers on? That is a label question and it is the one most worth getting right, because the consequence lands in the honey rather than in the bees. Read the label for the product you bought and plan the harvest around it.
Does Apivar work on mites in capped brood? No. Amitraz transfers by contact with adult bees, so mites sealed under cappings are only exposed once those bees emerge. That is why the strips are designed to stay in across several brood cycles.
Is amitraz resistance real? Reduced efficacy where the same active is used repeatedly is a live concern in extension guidance from the University of Minnesota Bee Lab and Penn State Extension. The way you find out in your own apiary is by counting mites before and after every application.
How many times a year can I use it? The maximum number of applications per colony per year is on the label. Beyond that limit, your mite counts and your rotation plan should drive the decision rather than habit.
Do I need protective equipment to handle the strips? The label lists what to wear when handling and placing them, and that section is not optional. Disposable gloves are the minimum most keepers use so nothing transfers to hive tools, gloves or the truck seat.
The Bottom Line
Apivar earns its place in a backyard rotation because it removes the weather from the equation, which matters when your treatment window is a single free weekend in a bad-forecast month. In exchange it asks you to plan: the strips occupy the brood nest for weeks, the removal date is a real deadline, and the honey supers question is settled by the label before you start rather than improvised afterward. Count mites either side of the application so you know whether it worked. Next, read our overview of varroa mite treatment options or the label comparison in Apivar or Formic Pro.