Swirski Ulti-mite

Swirski Ulti-mite

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Orders placed on Thursday before 11:30 am PST will deliver Thursday of the following week. Orders placed on Monday before 9:00 am PST will deliver Friday of the same week.

Predatory mites (Amblyseius swirskii)

Use Swirski Ulti-Mite for:

  • Young larvae of various thrips species
  • Eggs and larvae of whitefly
  • Broad mites


Each sachet with hook contains 250 predatory mites and storage mites (all stages) mixed with carrier material /bran. Swirski Ulti-Mite is available in 100 or 500 sachets per box.

The sachet is made of a  100% industrial compostable foil. It satisfies the conditions of the 'Industrial compostable’ standard (certified by external party). The sachets can therefore be disposed of together with the crop waste.

General information

When to use Swirski Ulti-Mite

Use Swirski Ulti-Mite for biological pest control of young larvae of various thrips species, eggs and larvae of whitefly (both Trialeurodes vaporariorum and Bemisia tabaci) and tarsonemid mites (Polyphagotarsonemus latus). Use Swirski Ulti-Mite as a preventive method and when the first signs of a pest appear.

How Swirski Ulti-Mite works

Adult predatory mites search for their prey or wait for it to pass by and subsequently feed on their prey.

How to use Swirski Ulti-Mite


  • Use sachets as soon as possible after receipt
  • Hang sachets in sheltered locations on the crop (no direct sunlight).
  • Sachets can be placed directly into the crop (sachets already have an exit hole)
  • Handle sachets by the cardboard strip at the top; predatory mites are easily damaged

Best working conditions

The predatory mite is not susceptible to diapause. Therefore, Ulti-Mite can also be introduced during the winter time. It is tolerant to high temperatures; a swirskii population starts to develop when the temperatures during the day regularly exceed 20-22 C/68-71.6°F.



Biological beneficials have a very short life expectancy and therefore need to be introduced to the crop as soon as possible after receipt. Failure to do so can have a negative impact on their quality. In case you do need to store Swirski Ulti-Mite, please follow the instructions below. Shale Peak Horticulture, LLC is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions.

  • Storage after receipt: 1-2 days
  • Storage temperature: 10-15°C/50-60°F
  • In the dark
  • Provide ventilation to prevent CO2 accumulation

The information given below is merely indicative. Tailored advice can be provided if information is available on the local factors that need to be taken into account, such as the crop, the climate conditions and the level of infestation. For the correct approach, please consult a Shale Peak Horticulture specialist.

Swirski Ulti-Mite


light curative

heavy curative





Interval (days)






start when thrips or whitefly is present

infected areas only, always in combination with other beneficials