First-Year Beekeeper Guide to Varroa Management
Every new beekeeper eventually hears that varroa is the biggest threat to managed honey bees. This is true and has been true for decades. But the practical guidance on what to actually do about varroa is often inconsistent, sometimes overwhelming, and occasionally wrong. Here is a straightforward approach to varroa management for beekeepers in their first year with bees.
Understanding the Threat
Varroa destructor is a parasitic mite that feeds on honey bee pupae and adult bees. Left uncontrolled, varroa populations grow exponentially through the brood season. A colony that starts spring with a moderate mite load may be overwhelmed by late summer. The mites themselves weaken bees, but the viruses they transmit, particularly Deformed Wing Virus, cause the most visible damage: bees with shriveled wings who cannot fly, shortened lifespans, and a colony that collapses even as it still looks populated in late summer.
The good news is that varroa is manageable. Millions of beekeepers keep healthy colonies by monitoring mite levels and treating when necessary. The skill is not complicated. It just requires consistency.
When to Start Monitoring
If you installed a package or nuc in spring, begin your first mite count about 4 to 6 weeks after installation. By this time, the colony has established a brood nest and the mite population is beginning to build alongside bee population growth. A count at 4 to 6 weeks gives you a baseline.
If you acquired bees in another way, such as a swarm or an established hive, count mites within the first week or two. You do not know that hive's history and cannot assume mite levels are low.
How to Do an Alcohol Wash
The alcohol wash is the most reliable method for measuring mite infestation rates. You need a half-pint jar, a piece of screen mesh that fits over the opening, rubbing alcohol (70% isopropyl), and a white plate or white container for counting.
Steps:
- Find a frame with brood in the center of the nest. Bees on brood frames are more likely to include nurse bees, which carry more mites than field bees.
- Shake or brush about 100 bees from the frame into your jar. One hundred bees is roughly the volume of a half cup.
- Pour enough alcohol to cover the bees. Cap the jar with the screen and shake for 30 to 60 seconds.
- Pour the alcohol through the screen into your white container. The bees stay in the jar. The mites, being smaller, pass through the screen with the alcohol.
- Count the brown oval-shaped mites in the white container.
Your infestation rate equals the number of mites counted divided by the number of bees in your sample, expressed as a percentage. If you count 3 mites in a 100-bee sample, your infestation rate is 3%.
When to Treat
The standard treatment threshold during active brood season is 2%, or 2 mites per 100 bees. At or above this level, treat. Below this level, monitor and count again in 4 weeks.
Do not wait until you see symptoms of mite damage before treating. By the time you see bees with deformed wings crawling in front of the hive, your mite population has been elevated for weeks and the colony's winter bee cohort may already be compromised.
Treatment Options for New Beekeepers
For a first-year beekeeper with a single colony, the most approachable treatments are:
Apivar strips (amitraz): Place two strips in the brood area in contact with bees. Leave for 6 to 8 weeks. Remove all strips after treatment is complete. No temperature restrictions in the normal treatment range. One of the most reliable options for fall treatment.
Oxalic acid vaporization (OAV): Effective and relatively inexpensive per treatment. Requires a vaporizer and safety equipment (respirator rated for acid vapors, gloves, eye protection). During broodlessness, a single treatment is highly effective. During brood-on conditions, three treatments 5 days apart are needed. Not suitable for use without proper safety equipment.
Apiguard (thymol): A gel placed on top of the frames. Requires temperatures above 60 degrees Fahrenheit to volatilize properly. Effective and easy to use. Not compatible with honey supers in place.
Recording Your Results
New beekeepers often do not keep records because they only have one or two hives and feel like they will remember. They do not, or at least not reliably. A few data points per inspection, logged consistently, become genuinely useful within one season.
Record each mite count with the date and result. Record each treatment with the product, dates in and out. Record a post-treatment count 10 to 14 days after treatment ends. This is the minimum viable record that lets you know whether your management is working.
VarroaVault is designed to make this easy even for beekeepers just starting out. You log your hive, enter mite counts, and the platform calculates your infestation rate and alerts you when counts exceed threshold. The mite count tracking app guide walks through the field entry workflow in detail.
The First-Year Summary
Count mites starting at 4 to 6 weeks after installation. Count every 4 weeks through the season. Treat at or above 2%. Verify the treatment worked with a post-treatment count. Repeat. Every serious beekeeper who keeps healthy hives year after year does some version of this.
Varroa management is not complicated. It is consistent.