KIS Organics


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  • Regular price $ 87.00
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Please note:

We are unfortunately unable to sell Persimilis in the state of California. Please call us for alternative options.

We cannot ship live insects to PO Box addresses.  All orders placed to a PO Box instead of a physical address will be delayed until an address is provided.

Persimilis (Phytoseiulus persimilis)

Phytoseiulus persimilis is a predatory mite, proven outstanding, aggressive and highly effective against spider mites. In suitable conditions, persimilis can develop faster as its prey, allowing it to suppress mite infestation quickly and thoroughly. Performs especially well in strawberries and other crops where relative humidity remains above 65%

Targets Pests: Two-spotted spider mite (Tetranychus urticae), Red/Carmine spider mite (Tetranychus cinnabarinus) and related web-spinning spider mites.

The adult female is a distinctive reddish-orange color with a pear-shaped body. Its long front legs allow it to move quickly and easily navigate spider mite webs which makes it an ideal choice to control spider mites in a wide variety of crops.

Phytoseiulus persimilis is available as BioPersimilis and as BioPersi+

BioPersi+ is produced using a new alternative food system and innovative rearing method which allows for efficient, consistent and dependable production for this predatory mite.  BioPersi+, an improved version over the traditional BioPersimilis (Phytoseiulus persimilis) in many respects.

Compared to the traditional BioPersimilis, which appears as a shiny red-orange mite, BioPersi+ is white upon arrival. Yet it turns red-orange once it starts feeding on spider mites. This change in color confirms active predation and is a useful visual indicator. BioPersi+ has a higher fecundity than the traditional BioPersimilis: females lay over 19 eggs within 5 days, under favorable conditions. BioPersi+ displays better searching ability and control of spider mite hot spots of predation, an advantageous and unique visual indication to the grower.



A bottle contains 2,000/ 4,000 mites


A bottle contains 2,000/ 4,000 individuals: adults and young mobile stages, mixed in a medium. Carpoglyphus lactis eggs may also be present.

Also available in bottles of 10,000 and 20,000 individuals.

New application method: Sachets

At least 100 mites per sachet, pre-perforated, the sachets are ready to use.

  • BioPersi+ Speed Sachet: Recommended for hotspot treatment. Fast release 100+ mites/sachet for up to 5 days
  • BioPersi+ Classic Sachet: Recommended for preventive use.  Slow release 300+ mites/sachet for up to 12 days

BioPersi+ Sachet Advantages

  • Easy & convenient application
  • Zero waste
  • Precise application
  • No direct contact with fruit or foliage


BioPersimilis and BioPersi+ may be hand-released, in bigger areas, they may also be released by drone or blower.

Application of the mites should be during the early morning or late afternoon while the temperature is relatively mild.

The individual bottles should be removed from the insulated box, one at a time.

Before releasing, the bottle should be gently rotated to mix evenly, the mites and the vermiculite.

The mites are released by gently tapping the opened bottle over the plants while walking between the rows of the crops.

Suggested applications:

  • Sachets: low pressure 1 sachet per 50 sq ft, moderate pressure and sign 1 sachet per 20 sq ft, webbing outbreak 1 sachet per 10 sq ft.
  • Loose: Preventative 1-3 per sq ft, webbing outbreak 10+ per sq ft, outdoor growers 20,000 - 200,000 depending on situation.

Please note that this a suggested application and the amount to be released is determined by the type of crop, field conditions, level of infestation and damage present in the crops.


Orders can take 1 - 2 weeks to arrive to you.  Beneficial Insects are reared to order. You can refer to our order and shipping deadlines to get a better idea of when your order will be ready HERE.

Please feel free to call or email us before placing your order if you have any questions.

All beneficial insects are shipped via an overnight carrier once the order is ready to leave the insectary.


Please note that once you have made your purchase, we are unable to accept returns or process refunds for beneficial insects.  The specific quantity and insect state you order are specially reared at the insectary so as to handle your particular pest pressure and arrive viable and ready to get to work!


The product is supplied in cooled insulated boxes. It should be transported to the cultivated area (fields, greenhouses or net houses) in the same boxes.


If you would like to speak to an expert to produce a tailor-made IPM program to meet your individual needs, please email us at or call us at (425) 558-0990.


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Customer Reviews
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United States

Great vendor

Very helpful, fast shipping. Highly recommend.

Dan D.
United States United States

Inventory,speed, price and customer service

1st time customer great service

Steven A.
United States United States


Looking good so far, definitely noticed difference with my foliar spray.

Troy D.
United States United States

Good quality even better company

Phenomenal thanks! First time using it and it does make a difference

Stephen A.
United States United States

As good as advertised.