Varroa Test Sugar Shake Kit

Know Your Mite Load Before It Costs You a Colony

Varroa is no longer something Australian beekeepers read about happening somewhere else. Since the mite was found in NSW in 2022 and the country moved to management in 2023, the question for most beekeepers isn't whether it will reach them but when. The beekeepers who come through it with strong colonies are the ones who know their mite numbers.

This sugar shake test kit is the simplest way to put a number on it. A jar with a mesh screen lid lets you sample around 300 bees, dust them with icing sugar, and shake the mites out through the mesh to count them. Bees go back into the hive afterwards, a bit sugary but alive. In about ten minutes at the hive, you get a figure in mites per 100 bees, the number every treatment decision in Australian varroa management is built around.

How the Sugar Shake Works

Varroa mites hold onto bees with sticky footpads. Fine icing sugar gets between the pad and the bee, breaking that grip, while the sugar coating also triggers grooming that knocks more mites loose. Inverting the jar and shaking it lets sugar and mites fall through the mesh while bees stay inside.

How to Use It

Pick a frame from the brood nest with plenty of nurse bees, checking the queen isn't on it. Scoop roughly half a cup into the jar for about 300 bees, add 1 to 2 tablespoons of icing sugar through the screen, and roll gently for a minute or two. Let it sit two minutes in the shade, then shake firmly over a white tray or bucket of water for at least a minute. Count the mites, divide by three, for mites per 100 bees.

Sugar Shake vs Alcohol Wash

The alcohol wash is more accurate and preferred for state surveillance, but kills the sample. The sugar shake keeps bees alive but recovers fewer mites, so it can miss a light infestation if the sugar is damp or shaking is half-hearted. Test often and treat a low result as a prompt to retest, not a clean bill of health.

When to Test and What the Numbers Mean

Test at least four times a year, every three to four weeks through spring and summer once varroa is confirmed in your district. As a working rule, under 1 mite per 100 bees is low, 2 to 3 means planning a treatment, and anything above 3 needs treating now.

What It Will Not Do

This is a monitoring tool, not a treatment. It doesn't reach mites breeding under capped brood, usually the majority, so a zero count is a good sign rather than proof of absence. Test each hive individually if running multiple colonies.

Specifications

• Design: Clear sample jar with removable mesh screen lid
• Sample size: Approximately half a cup, around 300 bees
• Result: Expressed as mites per 100 bees (count divided by three)
• Non-destructive: Bees returned to the hive after testing
• Reusable: Rinse and dry the jar and screen after each use
• Requires: Pure icing sugar (not icing mixture), not included

How many bees do I need for a sugar shake test?

Approximately half a cup, around 300 bees, scooped from a brood frame with plenty of nurse bees.

Do the bees survive the test?

Yes, the test is non-destructive. Bees are returned to the hive afterwards and clean themselves up within the hour.

How much icing sugar do I need?

1 to 2 tablespoons of pure icing sugar, not icing mixture, added through the mesh screen.

How do I calculate the mite count?

Count the mites collected in the tray and divide by three to get mites per 100 bees.

Is the sugar shake as accurate as an alcohol wash?

No, the alcohol wash is more accurate and preferred for official surveillance, but it kills the sample. The sugar shake keeps bees alive but may miss light infestations.

How often should I test for varroa?

At least four times a year, and every three to four weeks through spring and summer once varroa is confirmed in your area.

What mite count means I should treat my hive?

Under 1 mite per 100 bees is low, 2 to 3 means planning a treatment, and anything above 3 needs treating now.

Does this kit detect mites breeding in capped brood?

No, it only detects mites on adult bees, not those breeding under capped brood, which is usually the majority of the population.

Can I reuse this kit?

Yes, rinse and dry the jar and mesh screen after each use for repeated testing.

Does a zero mite count mean my hive is varroa-free?

Not necessarily, a zero count is a good sign but doesn't guarantee absence, especially with a very light infestation.