How to manage propolis, burr comb, Varroa mites, and Deformed Wing Virus in your Primal Bee hive.
Keeping your colony healthy means staying on top of routine hive maintenance and active Varroa management. The Primal Bee hive's precise coupling-profile fit (Pillar 3) reduces propolis buildup, and the engineered thermal shell helps bees dedicate more energy to hygienic behaviors — but no hive eliminates the need for monitoring and treatment. Boundary: Primal Bee supports both treatment-free (IPM-first) and treatment-based approaches. Mite control is the beekeeper's responsibility regardless of hive type, and PB-specific protocols are actively being refined.
This article covers propolis and burr comb, Varroa monitoring, oxalic acid sublimation (the recommended treatment method for Primal Bee), and how to identify and address Deformed Wing Virus. For broader treatment options, see Treatment compatibility. For the integrated mite treatment workflow, see Mite treatments and disease management.
Managing propolis and burr comb
The precise fit of Primal Bee components minimizes the gaps bees feel compelled to seal, so propolis builds up far less than in a wooden hive. Bees will apply a thin propolis envelope throughout the interior — this is normal, antimicrobial, and beneficial. Leave it in place.
Removing propolis from EPS components
Wait for cold weather (below 55°F) — propolis becomes brittle and pops off cleanly rather than smearing
Use a plastic scraper, paint stirrer, or hive tool flat edge with light pressure — don't dig into the EPS
Only remove buildups that block frame rests, connection points, or the entrance — leave thin interior films alone
Never use solvents — they damage EPS
Managing burr comb
Burr comb most commonly forms when the hive is unlevel (especially with foundationless frames) or when a frame is accidentally left out during an inspection. A thin hive tool edge is all you need to dislodge it — no special tools required.
Varroa mite monitoring
During the active season (spring through early fall), check mite levels every 4–6 weeks. Increase to every 3–4 weeks in late summer, when winter bees are being reared and mite populations peak. Always check before and after treatment to confirm efficacy.
Important: The Primal Bee hive does not eliminate the need for Varroa monitoring and treatment. All colonies require active mite management regardless of hive type.
Using the Varroa monitoring tray
The integrated Varroa tray slides into the bottom board beneath the screen and tracks natural mite fall over a 24–48 hour window. Daily mite fall thresholds: 0–3/day = low, 4–9/day = moderate, 10–15/day = high (treatment likely), 16+/day = critical. Fall threshold: treat at 3–5/day in September–November to protect winter bees.
For full setup (oiling the tray, insertion timing, maintenance) and complete reading guidance, see Screen bottom board.
Note: Natural mite fall is less precise than an alcohol wash. Use it for ongoing monitoring and supplement with periodic alcohol washes for more accurate readings.
Alcohol wash method
The alcohol wash is the most accurate standard method for counting Varroa.
Collect approximately 300 bees (roughly half a cup) from a frame of open brood — these frames have the highest mite concentration
Place the bees in a jar with 70% isopropyl alcohol or soapy water and shake vigorously for 60 seconds
Pour the liquid through a fine-mesh screen and count the dislodged mites
Calculate: (number of mites ÷ 300) × 100 = infestation percentage
Treatment thresholds
3% infestation (approximately 9 mites per 300 bees) during the active brood season is the most widely used treatment threshold
1–2% infestation in late summer, when mites disproportionately impact winter bee quality
Some beekeepers treat at 2% year-round to stay ahead of population growth
Important: Varroa populations can double every 3–4 weeks during a brood cycle. Always treat before the population becomes unmanageable.
How the Primal Bee hive affects Varroa levels
The hive's thermodynamic efficiency and support for strong, healthy populations means bees have more energy for hygienic behaviors — including grooming and detecting mite-infested cells. Healthier, less stressed colonies are more effective at Varroa self-management.
Oxalic acid sublimation: the recommended Varroa treatment
Oxalic acid sublimation is the recommended treatment method for Primal Bee. Because the hive is high-density EPS with adiabatic sealing (Pillar 3), follow these PB-specific guidelines — the sealed environment changes effective concentration, so standard wooden-hive dosing doesn't transfer directly.
Recommended: top-down application
Top-down application through the feeding hole is the most effective method. Bees fan vapor entering from the top downward through the cluster and brood area, resulting in more uniform distribution. Vapor entering from the bottom may get fanned out before fully penetrating the brood area.
Cut a circular wooden disc to fit the feeder hole
Drill a small hole through the disc to accommodate your vaporizer tube
Feed the vapor through this opening, allowing it to disperse downward through the brood chamber and out the entrance
Tip: Entrance application is possible (e.g., when managing many hives in the field) using a simple adaptor, but it's less effective than top-down delivery.
Protecting EPS from heat damage
The hot vaporizer tip must never contact the EPS hive body — sustained radiant heat from a nearby element can also cause damage over time, even without direct touch.
Use a cork, wooden insert, or heat-resistant plastic adaptor around the vaporizer pipe to seal the feeder hole with safe clearance
Temperature-controlled vaporizer devices with regulated output are recommended over open-element vaporizers, which are harder to control and more likely to cause accidental overheating
Dosage
Start with approximately half the normal dosage — for sublimation, begin at around 1 gram and increase incrementally only if mite counts don't respond. The Primal Bee hive's coupling-profile seal means PB retains vapor well, so a lower starting dose typically achieves equivalent or better results than the standard wooden-hive dose. Scale up carefully based on your mite counts.
Important: Treatment protocols specific to Primal Bee are actively being refined. Slow-release acid treatments (oxalic strips, formic strips, VarroxSan) require extreme caution in PB's sealed environment — standard dosages can create harmful concentrations. Follow PB-specific guidance only.
Treatment spacing rules: Never combine treatments. Minimum waiting periods between different treatment types:
- Varroa treatment to varroa treatment: 4 weeks
- Disease treatment to disease treatment: 1–2 weeks
- Disease treatment to varroa treatment: 2–4 weeks
Complete the full course of any treatment before starting another.
Treatment cycle
Treatment is typically repeated every 5 days, covering a full 21-day brood cycle if necessary
Keep the Varroa tray inserted and closed during treatment to monitor mite fall
Always perform a mite count before and after treatment to gauge need, dosage, and efficacy
Other mite treatments
Most common mite treatments work in the Primal Bee hive, but some need PB-specific adjustments. Apivar / Apistan strips (amitraz / tau-fluvalinate) hang between nest frames; because PB nest frames are approximately 3× the size of a standard Langstroth frame, attach two strips end-to-end. Dosage for PB's larger volume is being refined. Apiguard (thymol gel) is usable but the sealed environment can concentrate vapors more than expected — monitor closely. Slow-release acid strips (oxalic strips, formic strips, VarroxSan) require extreme caution in PB's sealed environment — standard dosages can create harmful concentrations; follow PB-specific guidance only. For specific guidance, reach out to the team. See Treatment compatibility for the full overview.
Deformed Wing Virus (DWV)
DWV is a Varroa-vectored virus and the leading consequence of unchecked mite infestations. The only effective approach is aggressive Varroa control — reduce the mite population and the virus largely stops spreading.
Quick identification signs:
- Stubby, crumpled, unusable wings on newly emerged bees
- Crawling bees on the ground in front of the hive (can't fly)
- Increasing proportion of symptomatic bees as the season progresses
For full DWV detail — biology, treatment approach, consequences of ignoring, recovery patterns — see Mite treatments and disease management.
FAQ
Will propolis build up in my Primal Bee hive?
Less so than in a wooden hive. The precise fit and design of Primal Bee components minimizes the gaps that bees feel compelled to seal. Bees will apply a thin propolis envelope throughout the interior — which is normal and beneficial — but not to the extent that it becomes problematic or requires removal.
Do I need to remove the thin layer of propolis inside the hive?
No. A thin layer of propolis throughout the hive interior is normal and beneficial — it has antimicrobial properties and is part of the bees' natural hygiene. There's no need to remove it.
What causes burr comb to form in the Primal Bee hive?
Burr comb is most likely to occur if you go foundationless on an unlevel hive, or if a frame is accidentally left out during an inspection — leaving a gap the bees fill with comb.
How do I remove burr comb if I find it?
A thin hive tool edge is all you need to dislodge burr comb. It's straightforward to remove and doesn't require any special tools.
How do I safely remove propolis from EPS hive components?
Wait for cold weather (below 55°F) so propolis becomes brittle and pops off cleanly. Use a plastic scraper, paint stirrer, or the flat edge of a hive tool with light pressure — don't dig into the EPS. Leave thin interior films in place and only remove buildups blocking frame rests, connection points, or the entrance. Never use solvents — they damage EPS.
How do I use the Varroa monitoring tray that came with my hive?
The integrated tray slides into the bottom board beneath the screen and tracks natural mite fall. For setup, insertion timing, and full reading guidance, see Screen bottom board. Daily mite fall thresholds: 0–3 = low, 4–9 = moderate, 10+ = treatment likely. Natural mite fall is less precise than an alcohol wash; supplement with periodic alcohol washes for more accurate readings.
What is the alcohol wash method for counting Varroa, and is it the most accurate?
Yes, the alcohol wash is the most accurate standard method. Collect approximately 300 bees from a frame of open brood, place them in a jar with 70% isopropyl alcohol or soapy water, and shake vigorously for 60 seconds. Pour the liquid through a fine-mesh screen, count the mites, and divide: (number of mites ÷ 300) × 100 = infestation percentage. A rate above 3% (about 9+ mites per 300 bees) during the brood season is the widely accepted treatment threshold. Some beekeepers treat at 2% to stay ahead of population growth.
What mite level requires treatment?
The most widely used threshold is 3% infestation by alcohol wash (approximately 9 mites per 300 bees) during the active brood season. In late summer — when the last winter bees are being raised — many beekeepers use a lower threshold of 1–2%, because mites at that time have a disproportionate impact on winter bee quality. Varroa populations can double every 3–4 weeks during a brood cycle, so always treat before the population becomes unmanageable.
How often should I check my mite levels?
During the active season (spring through early fall), check every 4–6 weeks using an alcohol wash or the Varroa tray. Increase frequency to every 3–4 weeks in late summer, when winter bees are being reared and mite populations are at their seasonal peak. Always check mite levels before and after treatment to confirm efficacy.
Does the Primal Bee hive's design affect Varroa mite levels?
The hive's thermodynamic efficiency and support for strong, healthy populations means bees have more energy for hygienic behaviors — including grooming and detecting mite-infested cells. Healthier, less stressed colonies are more effective at Varroa self-management. That said, the Primal Bee hive does not eliminate the need for monitoring and treatment — all colonies require active mite management regardless of hive type.
Can I use oxalic acid sublimation in a Primal Bee hive?
Yes — and it's the recommended treatment method for Primal Bee. Because the hive is high-density EPS with adiabatic sealing, certain precautions matter: protect the EPS from direct vaporizer heat, and start at approximately half the standard wooden-hive dose since PB retains vapor well. For specific guidance, ask the team, or join Dr. Jason Graham, PhD, Head of U.S. Beekeeping Operations, during his complimentary weekly remote video office hours (Mon 10am PDT / Wed 2pm PDT via Google Meet).
What is the best way to apply oxalic acid vapor in a Primal Bee hive?
Top-down application through the top feeder hole is recommended. Cut a circular wooden disc to fit the feeder hole, drill a small hole through the disc for your vaporizer tube, and feed the vapor through this opening so it disperses downward through the brood chamber and out the entrance. Bees fan vapor entering from the top downward through the cluster, resulting in more uniform distribution. Vapor entering from the bottom entrance may get fanned out before fully penetrating the brood area. If you have questions about adapting this method to your setup, ask the team.
How do I prevent the hot vaporizer from damaging the EPS hive material?
The hot vaporizer tip must never contact the EPS hive body — sustained radiant heat from a nearby element can also cause damage over time, even without direct touch. Use a cork, wooden insert, or heat-resistant plastic adaptor that fits around the vaporizer pipe and seals the feeder hole, maintaining safe clearance. Temperature-controlled vaporizer devices with regulated output are recommended over open-element vaporizers, which are harder to control and more likely to cause accidental overheating near the hive walls.
What dosage of oxalic acid should I use compared to a standard wooden hive?
Start with approximately half the normal dosage used in a wooden Langstroth hive. Primal Bee's coupling-profile seal means PB retains vapor well, so a lower starting dose typically achieves equivalent or better results. Scale up carefully based on your mite counts. Treatment protocols specific to Primal Bee are actively being refined — follow PB-specific guidance.
How often should I repeat the mite treatment cycle?
Monitor mite fall using a clean, lightly oiled Varroa tray — keep the tray inserted and closed during treatment. Treatment is typically repeated every 5 days, covering a full 21-day brood cycle if necessary. Always perform a mite count before and after treatment to gauge need, dosage, and efficacy.
Can I apply oxalic acid vapor from the entrance instead of the top?
Yes — entrance application is possible (e.g., when managing many hives in the field). You can build a simple adaptor for your vaporizer to deliver oxalic acid through the entrance. However, it's less effective than top-down through the top feeder hole because the colony may fan vapor outward rather than through the brood area.
Are other types of mite treatments compatible with Primal Bee hives?
Most common treatments work, with PB-specific adjustments. Apivar / Apistan strips (amitraz / tau-fluvalinate) hang between nest frames; attach two end-to-end since PB nest frames are ~3× a standard Langstroth frame. Dosage for PB's larger volume is being refined. Apiguard (thymol gel) is usable but the sealed environment can concentrate vapors more than expected. Slow-release acid strips (oxalic strips, formic strips, VarroxSan) require extreme caution in PB's sealed environment — standard dosages can create harmful concentrations; follow PB-specific guidance only. See Treatment compatibility for the full overview.
What is Deformed Wing Virus, and how do I deal with it?
DWV is a Varroa-vectored virus that causes newly emerged bees to develop stubby, crumpled wings — they can't fly and don't survive long. The only effective approach is aggressive Varroa mite control. For full DWV detail — identification, biology, treatment approach, recovery patterns, and what happens if you ignore it — see Mite treatments and disease management.