Amblyseius swirskii are excellent at preventing and controlling thrips, whitefly and mite species. They have a big appetite and can consume up to 20 whitefly eggs or 15 larvae per day! When feeding on thrips it can consume up to 6 first instar thrips per day. Swirskii prefers eggs and nymphs but will feed on all stages of pests. It lays about 2 eggs per day which take 6-7 days to develop into adults depending on the temperature and type of food available. It can also survive on pollen in the absence of pests, allowing it to establish its population when pests are low. 


⁴ Fernández, M.M., Medina, P., Wanumen, A. et al. BioControl (2017) 62: 197.ández, M.M., Medina, P., Wanumen, A. et al. BioControl (2017) 62: 197.

BioSwirskii 500 (Sachet of Mixed Population)
500 sachet
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Release rate varies considerably depending on the crop, infestation level and season of the year. This is just a general release rate, please contact us here to create an IPM program that works for you.

Note: If not using immediately, keep in a cool (42-50°F) dark place out of direct sunlight.

Use of Pesticides can cause mortality in the Swirskii population; thus we recommend waiting at least two weeks or more, depending on the toxicity of the pesticide, before releasing Swirskii. If the use of pesticide is necessary we recommend only using it for a spot treatment as opposed to blanket spraying. 

Some Studies have shown that there are pesticides (sulfoxaflor, flubendiamideflonicamidmetaflumizonemethoxyfenozidespiromesifen and spirotetramat)⁴ that can be compatible with Swirskii under greenhouse conditions. However, we would still advise checking side-effect charts of pesticide being used carefully to avoid spraying any chemicals that are not known to be safe. If you have more question please contact us for a free consultation by one of our Ph.D. entomologist. We would love to help.  

Release Rates and Tips:

BioSwirskii 50K (Tube of Mixed Population)
Amount: 50000

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Ideal Environment:

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A.swirskii are very tiny and can not be seen by the naked eye. They also tend to look very similar to a number of other mites such as N. cucumeris, A. californicus, A. andersoni and A. fallacis. To examine the presence of swirskii in the crops tap plants or flowers over a piece of paper or white tray, inspect with a magnifying glass. Scouts may also look under leaves (near the veins and hairs) with a magnifying glass to find swirskii eggs. If you are using more than one type of predatory mite differentiating between the two is very difficult unless you are a taxonomist. For beginners, we suggest monitoring thrip levels at release points instead of Swirskii to observe the predators level of establishment in the crops. Some good signs to look for are webbing free new plant growth and damaged or empty webbing.

  • We don't recommend using Aphidoletes aphidimyza while using Swirskiii since it will feed on this beneficial predators eggs.

  • We recommend using Swirskii in combination with Encarsia to control whiteflies since Swirskii feeds on whitefly eggs and first instar nymphs, while Encarsia feeds on whitefly pupae.

Swirskii prefers a warm and humid environment (25°C - 30°C and over 70% RH) but is very tolerant of hot temperatures compared to other predatory mites. Swirskii is known to work in various environments including both greenhouse and field crops, fruit trees, ornamentals, horticulture, and nurseries.

Pesticide and Other Controls:


Tips and Tricks: