Special Blend Slow-Release Prevention Sachets
10% off your first 4 orders, then 15% off every order after.
Bulk sachet discounts still apply to repeat orders — even if your cart doesn't show them.
Heads up—this is just an estimate. We only ship when the bugs are happy and ready to travel (Mon–Thurs). If a colony needs a beat to peak, or we're propagating a fresh batch, your order might hold up to a week. Treatment bottles jump the line when you've got an active infestation.
Special Blend Slow-Release Prevention Sachets
At A Glance
How Do You Keep Spider Mites And Thrips From Coming Back?
You cleared the thrips. The webbing’s gone. That twisted new leaf finally unfurled normally.
Now what?
You’ve seen how fast spider mites, broad mites, russet mites, and thrips can spiral out of control—and you don’t want to go through that again. These sachets are how you stay ahead of it.
Biological Pest Prevention for Spider Mites, Broad Mites, Russet Mites, Thrips, and More
These sachets release live predatory mites gradually over 3–5 weeks to prevent pests from establishing in the first place. No sprays. No mixing. No guesswork.
If you’ve ever dealt with an infestation—or just want to avoid one—this is your slow-release insurance.
Each sachet contains four species of beneficial mites, selected to cover multiple pests, microclimates, and plant types. The mites emerge over time, spread throughout your foliage, and quietly take out pests while they’re still in egg or larval form.
You won’t see the mites. You also won’t see the pests. That’s the point.
What It Prevents
| Pest | Targeted Stage | Common Hosts |
|---|---|---|
| Thrips | Eggs and larvae | Syngonium, Philodendron, Calathea |
| Broad mites | All stages | Anthurium, African violets, Peperomia |
| Russet mites | All stages | Hoyas, cannabis, trailing aroids |
| Spider mites (T. urticae, T. pacificus) | All stages | Alocasia, citrus, ferns |
| Whiteflies | Immatures | Tomatoes, herbs, tropicals |
| Cyclamen mites | All stages | Begonias, ferns, curled foliage |
| Other soft-bodied mites | Varies | Common in mixed indoor collections |
This mix is especially helpful if:
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You aren’t sure what pests you’ll be dealing with
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You’ve cleared an infestation and want protection
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You grow in a warm, humid space with lots of foliage
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You want to stop spraying and try natural prevention instead
What's Inside
Each sachet contains a balanced mix of four compatible predatory mite species:
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Amblyseius swirskii – Targets thrips (eggs + larvae), whiteflies, broad mites, russet mites
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Amblyseius cucumeris – Thrips larvae, broad mites, cyclamen mites
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Amblyseius andersoni – Spider mites, broad mites, cyclamen mites; climate-flexible
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Phytoseiulus persimilis – Specialist spider mite predator (Tetranychus spp.)
Each species plays a different role—some dominate in heat, others tolerate cold. Some feed on eggs, others on mobile juveniles. Together, they give you coverage across pests before damage is visible.
How It Works
Sachets are designed for biological slow-release. Each one contains a mix of:
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Adult predatory mites
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Juveniles
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Eggs
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A food source (bran + supplemental feed)
Here’s what happens:
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Mites exit the sachet gradually through the vent
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They crawl onto leaves and stems, seeking pest eggs and larvae
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Adults feed and reproduce
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New generations emerge and continue hunting
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Coverage lasts 3–5 weeks depending on temperature and humidity
No spraying. No reapplication during the active release period.
How to Use
| Setup Type | Suggested Use |
|---|---|
| Houseplants | 1 sachet per plant |
| Grow tents or shelves | 1 sachet every 2–3 feet |
| Dense canopies or greenhouses | 1 sachet per cluster or per square foot |
| After bottle treatment | Begin sachets 5–7 days later |
| Ongoing protection | Replace every 3–5 weeks |
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Do not open the sachets. Mites exit naturally through the release hole.
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Hang sachets near foliage, but above the watering line—do not soak.
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Works under both grow lights and natural light.
Best Conditions for Success
| Factor | Ideal Range |
|---|---|
| Temperature | 70–85°F |
| Humidity | 60%+ (especially for persimilis egg hatch) |
| Light | Effective under artificial or natural lighting |
| Airflow | Moderate is fine; avoid blasting fans on sachets |
If your environment is dry, mist near (not on) plants or use a humidifier to improve mite emergence and reproduction.
Pro Tips
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Start early. Don’t wait for visible pest symptoms—these are for prevention.
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Pair with Good Bug Diet if you’re using sachets preventatively in low-pest conditions.
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Use sachets after bottles to maintain control after knockdown.
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Avoid contact sprays. Even organic ones can harm beneficial mites.
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Stay on schedule. Especially during spring, summer, and early fall.
Safe for Indoor and Edible Use
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Non-toxic
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Zero re-entry interval
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Pet- and pollinator-safe
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Compatible with organic growing and IPM systems
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Won’t harm soil microbes, fungi, or beneficial insects
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Invisible to the eye and residue-free
Shipping & Storage
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Ships 2-Day with tracking
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Use on arrival for best results
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Store up to 48 hours at 50°F if delayed
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Do not freeze or leave in hot, dry conditions
Target Pests
Environmental Needs
Selection Guide
How to Use
How They're Shipped
Hang them up, then wait.
How to deploy your sachets, and how to read the results over the next few weeks. Sachets are prevention — a slow-release nursery that ramps up over weeks, not a quick knockdown for an active outbreak.
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01
Open the box right away
Bring the package indoors as soon as it arrives. Don't leave it on a hot porch, in a cold mailbox, or in direct sun. If you can't deploy immediately, set the sachets somewhere room-temperature (60–75°F) and out of direct light — they'll keep for a day or two.
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02
Don't open the sachet
Each sachet is a self-contained breeding colony. The mites and their food source live inside; they emerge gradually through a small exit hole on the breathable face. Cutting the sachet open ends the slow release and dumps the colony all at once. Keep them sealed.
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03
Hang or place near the plant
Hook each sachet on a sturdy branch, hang from a stake, or set near the base of the plant — out of direct sun and away from anywhere it'll get watered. Mites travel from the sachet onto the plant on their own. One sachet protects roughly 2–3 feet of canopy; see the product description for exact spacing.
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04
Leave them alone for 4–6 weeks
Predator emergence ramps up over the first two weeks, peaks around weeks three to four, and tapers off through week six. You won't see the predators (they're smaller than a grain of salt), and an "empty-looking" sachet at week one means nothing. The real signal is what isn't happening — pests not establishing on protected plants.
Something visibly wrong on arrival?
Sachets that arrived torn, soaked, or with a sour smell — take a photo and email info@fgmnnursery.com within 24 hours of delivery with your order number. We'll replace or refund without question.
Read the full Live Delivery Guarantee →Join Karen's Live Shows — Pests, Plants & Predators on PalmStreet.
Every Friday at 7pm EST — plus additional shows throughout the week. Ask your pest questions in real time — we answer everything.
FAQ
What is your Live Delivery Guarantee?
We guarantee that your beneficial insects will arrive healthy and ready to work. Because we are shipping live organisms, we use packaging and expedited shipping to ensure their safety. In the rare event that your order is compromised during transit, please take a photo of the package and contact us within 24 hours of delivery so we can make it right.
How long does one Special Blend sachet actively release mites?
Can I use Special Blend sachets alongside other biological controls?
Will the mites spread throughout my home?
Do these mites bite humans or pets?
Can I use Special Blend sachets year-round?
How do I know if the sachet is still active?
Help! I'm overwhelmed
Yeah, it's a lot the first time you're using predatory mites. Please email us at info@fgmnnursery.com and we'll be happy to help!
I don’t see anything moving in my bottle or sachet. Does that mean they’re dead?
Not at all! In fact, go ahead and deploy them.
Predatory mites are microscopic (often less than 0.5mm) and naturally blend into their carrier medium (bran or vermiculite).
- For Bottles: The mites often huddle in the center of the bottle for insulation during transit.
- For Sachets: These are "slow-release" nurseries. The mites stay tucked deep inside the breeding media and emerge one by one over 2–4 weeks. Seeing an "empty-looking" sachet or bottle is not proof of a loss; it is simply how they are packaged for maximum survival.
Mite Matters
Cucumeris: Why It Works (and Why It Fails)
Cucumeris is reliable, widely researched, and genuinely effective — within a specific set of conditions. Here's what it actually does, what it won't do, and how to tell if it's the right species for your situation.
My Plant Has Webbing. Help.
Webbing on a plant isn't always spider mites — and the mite that causes the most damage indoors doesn't produce webbing at all. Here's how to tell what you're actually looking at before you treat.
Native vs Invasive Ladybugs
Most ladybugs you'll encounter are red with black dots — and that description fits native, introduced, and invasive species equally. Here's how to actually tell them apart, what the harlequin ladybug has been doing to native populations, and where the real ecological concerns are.