Sf Nematodes

Up to 15 Plants (5 Million Nematodes)

How many plants are you treating? (Dosing is based on 6-inch pots; adjust up or down as needed.) Up to 15 Plants (5 Million Nematodes) Up to 30 Plants (10 Million Nematodes) Up to 75 Plants (25 Million Nematodes) Up to 100 Plants (33 Million Nematodes) Up to 150 Plants (50 Million Nematodes) Up to 300 Plants (100 Million Nematodes) Up to 750 Plants (250 Million Nematodes)

Steinernema feltiae (Easy-Release Powder)

Soil-Applied Biological Pest Control for Fungus Gnats, Thrips, and Root Pests

Sticky traps catch adults—but they don’t touch the source.
Neem and sprays stay on the surface.
The real problem is underground.

Steinernema feltiae is a biological soil treatment designed to eliminate fungus gnat larvae, thrips pupae, root aphids, and other soil-dwelling pests before they can emerge. These microscopic beneficial nematodes actively move through moist soil, locate pest larvae, and eliminate them from the inside—breaking the life cycle at its source.

This is soil-first pest control for problems sprays can’t reach.

What Are Steinernema feltiae Nematodes?

Steinernema feltiae are beneficial predatory nematodes used in integrated pest management (IPM) programs for indoor plants, greenhouses, nurseries, and soil-based growing systems.

Once applied, they:

Seek out soil-dwelling pest larvae
Enter the host and release symbiotic bacteria
Kill the pest within days
Reproduce underground for continued control

They work invisibly, without residue, odor, or re-entry restrictions.

What This Treats (Soil Stages)

Pest	Life Stage Targeted
Fungus gnats	Larvae in soil
Thrips	Pupae in substrate
Root aphids	Soil-dwelling forms
Fungus beetles, weevils, flea beetles	Larvae and grubs
More	Dozens of soil-based pests

If fungus gnats keep returning, this is how you stop the cycle permanently.

Why Choose Easy-Release Powder?

Feature	Benefit
Fast-acting	Kills larvae within 2–5 days
Self-replicating	Continues working underground
Cool-weather tolerant	Effective down to 46°F soil temps
Easy mixing	Dissolves quickly for even application
Broad compatibility	Safe with beneficial insects and mites

This product pairs especially well with predatory mites and predatory insects for complete, full-lifecycle pest suppression.

When to Use This Treatment

Use Steinernema feltiae if:

Fungus gnats persist despite traps
Thrips return after foliar treatments
You suspect root-level pest pressure
You want chemical-free pest control
You are building a biological control system

This is ideal for houseplants, rare plants, cabinets, greenhouses, grow rooms, and soil-based containers.

How to Apply

Pre-water soil so it is evenly moist
Mix powder into non-chlorinated water (59–69°F)
Apply using watering can, sprayer, or irrigation
Lightly water again to move nematodes into root zones
Keep soil lightly damp for 10–14 days

Avoid dry soil, full sun, or extreme temperatures during application.

How Much to Use

Use Case	Application Rate
Preventative or light pressure	5 million / 300 sq ft
Moderate to heavy infestation	5 million / 50 sq ft
Reapplication	Every 2–4 weeks as needed

Repeat weekly during heavy fungus gnat pressure or ideal breeding conditions (warm, humid, organic-rich soil).

Best Application Conditions

Soil temperature: 46–86°F
Moisture: Damp, not saturated
Light: Early morning, evening, or cloudy days
pH: Neutral to slightly acidic

Pro Tips for Maximum Control

Do not overwater—movement requires oxygen
Avoid insecticides before or after application
Reapply to disrupt overlapping pest generations
Combine with predatory mites (Swirskii, Persimilis) or predatory insects (Orius) for above- and below-ground coverage

This is how professional IPM programs are built.