Manual · Ants

Nematodes against ants

Biological control with Steinernema feltiae. The nematodes seek out the larvae in the ants’ nest and eliminate them. This stops the colony from growing and the nest moves away.

Season April – October Soil temperature above 10 °C Results 2–3 weeks Storage 4–8 °C

Read this first

You may still see some adult ants after treatment. That is normal — the nematodes first tackle the larvae, after which the nest gradually moves away. Read this manual fully before you start.

Step by step

How to apply the nematodes

Moisten soil and nests first

Thoroughly wet the ant nests and the surrounding soil before treatment. In moist soil the nematodes move freely and swim quickly to the larvae. On dry soil they get stuck near the surface and dry out.

Storage until use

Store the nematodes in the fridge (4–8 °C) immediately after delivery, not in the freezer. Use them preferably within 2 weeks. Only prepare the mixture at the moment of treatment and use it directly afterwards.

Make the concentrate

First dissolve the nematodes in 1 litre of water, stir until there are no lumps left
Mixing ratio: 1 litre of water per m² (10 m² = 10 litres, 50 m² = 50 litres)
Spread the concentrate evenly over that total amount of water

Garden smaller than your pack?Mix to the size of your own garden. Pack for 100 m², garden of 50 m²? Fill 50 litres of water. Use it all (overdosing does no harm) or keep half of the powder dry and cool. Note: nematodes already dissolved in water must always be used immediately.

Apply

Pour the mixture generously into and around the nest openings and over the ant trails
Treat all visible nests at once — otherwise the ants relocate
Apply in the evening or on a cloudy day (nematodes are sensitive to UV light)
Not on a hard surface — the nematodes must be able to move into the ground

The right moment

Season: April to October, as long as the soil temperature is above 10 °C
Weather: just before or during rain is ideal

Aftercare

Keep the treated spots lightly moist for at least 2 weeks; water again in dry weather
Results usually appear after 2 to 3 weeks: the nest is abandoned
Still activity after 2 to 3 weeks? Repeat the treatment

Dosage

Mixing ratios

Situation	Nematodes	Water	Application
Per individual ant nest	5 million	2 litres	Pour generously into and around the nest opening
Flat surface (lawn / border)	To garden size	1 litre per m²	Pour or spray evenly over the surface

ExampleGarden of 10 m² = 10 litres of water needed. A 5 litre watering can? Fill a 5 litre can twice and add half the concentrate to each can. That spreads all the nematodes evenly over the surface.

Safe & natural

No spray, no smell, no poison

Nematodes are 100% natural and safe for children, pets, birds and the environment.

Storage advice

Keep cool, use quickly

Store the nematodes in the fridge (4–8 °C) immediately after delivery, never in the freezer. Use them preferably within 2 weeks for the best result.

Ready to order?

Nematodes against ants

Tackle the nest at the larvae — safe, biological and without poison in your garden.

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