Product Description

NEMAforce™ SF is the beneficial nematode Steinernema feltiae, an intermediate forager that prefers to live 1–2 inches below the media surface and uses a mix of “cruising” and “ambush” hunting. It is the go-to nematode for fungus gnats and a useful tool against soil-stage thrips. The microscopic nematodes are harmless to people, pets, and plants, and fit cleanly into greenhouse, cannabis, and nursery programs.

What it targets

Fungus Gnat larvae
Shore Fly larvae
Mushroom Fly larvae
Western Flower Thrips, Onion Thrips, and other thrips (adults, larvae, and pupae)

Crops it supports

Ornamentals, hemp/cannabis, vegetables, mushrooms, soft fruits, and tree nurseries — in greenhouses, indoor facilities, fields, and gardens.

How the nematodes work

Infective juvenile nematodes penetrate the host through its natural openings. Once inside the body cavity, they release a symbiotic bacterium that kills the host insect within 24–48 hours. The nematodes grow and multiply inside the dead host, and a new generation of infective juveniles then leaves it in search of more pests.

Release Rates

Use / Interval	Rate
Soil or growing media — every 2–3 weeks	50 million per 1,100 ft² (250 million per 5,500 ft²)
Soil or growing media — every 4–6 weeks	50 million per 550 ft² (250 million per 2,750 ft²)

Apply in 30–50 gallons of water per 1,000 ft² (115–190 L per 100 m²). Always follow the product label for your crop and target pest.

Application & Storage

Application: NEMAforce™ SF can be applied with standard spray equipment, including tank sprayers, backpack sprayers, and irrigation injection systems — remove any filters first. Moisten the media to about 75% capacity, fill the spray vessel with half the required cool, clean water, start agitation, add the nematode trays, then continue agitating while filling to the final volume. Use enough total spray volume to carry the nematodes 1–2 inches below the surface where they live.

Storage & disposal: On receipt, remove the product from the shipping packaging and use it immediately, or store it in a refrigerator at 41°F (5°C) — do not freeze. Ensure good air circulation around each tray, and do not use the product past its expiration date or if it was stored incorrectly. Dispose of product and packaging in accordance with federal and local regulations.

NEMAforce™ SF – (50/250 million)