Swirski-Mite Ulti-Mite Sachets

Swirskii-Mite Ulti-Mite Sachets (Amblyseius swirskii) — Predatory Mite for Thrips, Whiteflies & Pest Mites
Swirskii-Mite Ulti-Mite sachets contain Amblyseius swirskii, a proven predatory mite for controlling thrips, whiteflies, and pest mites. Ulti-Mite sachets are designed for long-term, preventative coverage in any environment, especially useful for situations where humidity and temperature fluctuate. Unlike standard sachets that falter in dry or high-RH conditions, Ulti-Mite sachets maintain consistent predator release across zones. Swirskii-Mite Ulti-Mite is chemical-free, IPM-compatible, and safe for use in greenhouses, nurseries, orchards, flower beds, interiorscapes, outdoor landscapes, indoor plants including houseplants and more.

Key Advantages of the Ulti-Mite Sachet Format:
• Humidity tolerance: Reliable release in dry or high-RH environments
• Extended release window: 4–6 weeks of continuous predator emergence
• Compostable packaging: Industrially compostable film reduces plastic waste
• Low-maintenance deployment: Hang and Monitor

Use For
Swirskii-Mite sachets release predatory mites that feed on:
• Thrips larvae — including Frankliniella occidentalis, Thrips tabaci
• Whitefly eggs and larvae — including Trialeurodes vaporariorum, Bemisia tabaci
• Broad mites (Polyphagotarsonemus latus)
• Russet mites (Aculops lycopersici)
• Two-spotted spider mites (Tetranychus urticae) — For dedicated Spider mite control, Spical or Spidex more agressively prey on spider mite

When to Use Swirskii-Mite Ulti-Mite Sachets
Use wherever thrips, whiteflies, or pest mites are expected or present. Effective across all growing environments.

Recommended for:
• Preventative coverage to stop thrips, whiteflies, and pest mites before establishment
• Early-stage pest presence
• Hotspots requiring sustained biological control over 4–6 weeks
• Plants with dense foliage or layered canopy structures where pests hide in leaf folds and undersides
• IPM programs seeking long-term prevention & control

Curative Note:

• Pair sachets with Swirskii-Mite bulk bottles, and/or Thripor for curative control. In the case of an active problem, sachets work in tandem with bottle formulations to provide long-lasting clean up and prevention against population resurgence. For tall plants or vertical hangers, place sachets above and below the hotspot, apply bottles close to or directly at the problem. This dual strategy prevents pest spread and accelerates control.

How It Works
Mode of Action: Mites pierce and consume pest eggs and larvae using their mouthparts
Behavior: Mites reproduce inside the sachet and disperse gradually over 4–6 weeks, sachets produce multiple consecutive generations of predatory mites
Visual Effect: Pest populations decline as mites establish and feed
Release Duration: 4–6 weeks depending on humidity and conditions
Sachet Type: Ulti-Mite compostable film; reliable in dry or humid conditions

Feeding Rates:

• Nymphs and adults feed on thrips larvae, whitefly eggs and larvae, broad mites, russet mites, and two-spotted spider mites (early stages only)
• Nymphs and adults consume 5–10 pest eggs or larvae per day under optimal conditions
• Feeding life stages last approximately 20 day

Lifecycle of Amblyseius swirskii
Egg Stage
• Laid on leaf surfaces
• Hatch in 2–3 days under optimal conditions
Larval Stage
• Non-feeding
• Lasts 1–2 days
Nymph Stage
• Begins feeding on pest eggs and larvae
• Highly mobile and effective in early suppression
Adult Stage
• Actively hunts and consumes prey
• Lifespan ~20 days
• Capable of laying 2–3 eggs per day under optimal conditions

Diapause Behavior
Swirskii does not enter diapause in response to short day-lengths or low temperatures. This allows for use late into fall.

Release Rates & Placement

Placement Tips:
Hang sachets in sheltered spots, away from direct sun or heat
Hold by cardboard strip to avoid damage
Do not open sachets—exit hole is pre-made
Open shipping box near plants and tear sachets along perforations to separate them
For vertical crops, place sachets above and below pest hotspots

Best Working Conditions
Temperature: Active from 59°F to 97°F; optimal range 68–90°F
Reproduction Peak: Fastest at 86°F
Humidity: Optimal at 63% RH or higher

Compatibility Guidance:
• Allow residues from oils or soaps to dry before application
• Do not combine with other generalist predatory mites (Neoseiulus cucumeris, Amblydromalus limonicus, Transeius montdorensis, Amblyseius andersoni)
• For pesticide/spray compatibility details, check out our Natural Enemies - Chemical Compatibility Table and Beneficial Insect & Pesticide Compatibility Table

Product Specifications
Pack Size: 100 or 500 sachets
Mite Count: 250 predatory mites
Sachet Type: Ulti-Mite compostable film
Carrier: Bran
Presentation: Sachets in cardboard box
Appearance: White sachets with release hole; mites are tan and fast-moving

Storage & Handling
Store in the dark at 50–59°F
Use within 18 hours of receipt
Do not refrigerate

Environmental Impact & Sustainability
Compostable film reduces plastic waste and aligns with sustainable growing practices. By replacing chemical sprays, Swirskii-Mite helps reduce runoff, protect pollinators, and maintain ecological balance.

What to Expect

• Reliable predator emergence for long-term protection
  Each Ulti-Mite sachet delivers a steady stream of predatory mites for 4–6 weeks, ensuring continuous suppression of thrips, whiteflies, and pest mites. Mites emerge progressively, establishing across plant surfaces and targeting pest eggs and larvae before populations can increase.

• Consistent performance in challenging conditions
  Ulti-Mite sachets maintain release rates even under dry or high-humidity conditions. Whether in greenhouses, propagation zones, or indoor environments, expect dependable predator activity without interruption.

• Low-maintenance, high-impact control
  Once hung, sachets require no further handling. Mites disperse naturally, reducing the need for frequent reapplication. 

Recommended IPM Pairings
• Spical sachets for comprehensive control of mite species
• Thripor for increased thrips control during high pressure
• Isarid Mycoinsecticide for knockdown in high-pressure zones
• Knowing and Recognizing book for pest ID and scouting reference
• Swirskii-Mite bottle for curative coverage and hotspot targeting

FAQ

Do Swirskii-Mite Ulti-Mite contain adult mites?
Yes—sachets contain a mix of life stages, including adults, juveniles and eggs.

Is Swirskii-Mite safe for indoor plants?
Yes—completely safe for people, pets, and plants, making it ideal for use in enclosed environments like homes, offices, herb gardens and interiorscapes.

How soon will I see results?
Feeding starts immediately. Control builds quickly as predators move through affected areas.

Can I use this on tomatoes?
Swirskii is not recommended for tomato crops. Tomatoes have natural resistances to certain predators, making it difficult for Swirskii to maneuver and hunt on the plant. There is no harm to using Swirskii in any set-up, however Swirskii’s performance in tomatoes is subject to the specific species of tomato and its maturity. For tomatoes we recommend using Thripex sachets to control thrips and Spidex to control spider mites. These predators can navigate mature tomato plants.