Are nematodes dangerous for humans and animals? Is the use of nematodes harmless?

Anyone who wants to use nematodes against pests of indoor or agricultural plants often asks the question whether nematodes, also known as threadworms, are dangerous for humans and pets. This article brings light into the darkness.

 

Natural beneficial organisms in the soil

Nematodes, are introduced into the soil of the plant with the watering water. In the soil the microscopically small nematodes then eat the larvae of root pests, such as the larvae of the annoying fungus gnat. SF nematodes (Steinernema feltiae) are usually used to control indoor plants. When the nematodes have destroyed all pest larvae, they can no longer find food and die. The nematodes are not dangerous for humans, animals and the plant itself.

Nematodes are also used in organic farming to destroy pests without resorting to aggressive poisons. The big advantage: other insects such as bees are not affected by the useful earthlings. There is no more biological and environmentally friendly pest control. For this reason, more and more beekeepers and environmental protection associations are advocating the use of nematodes instead of poisons.

 

No danger for humans and animals

Nematodes live in the ground. There they find their food, like the larvae of the fungus gnat, and favourable living conditions. In the plant soil it is dark, constantly warm and sufficiently humid. Outside the plant soil the nematodes die, which is why they do not pose any danger outside the soil. As soon as the nematodes can no longer find food in the soil, they die. For humans, animals and the plant itself the nematodes are therefore harmless. Nevertheless, potting soil treated with nematodes should not be eaten, but due to various ingredients it should not be eaten. It does not taste good either.

nemaplus SF Nematoden zur Bekämpfung von Trauermücken - 6 Mio. für 12m² Blumenerde oder 60 Pflanzen
  • nemaplus SF Nematoden (Steinernema feltiae) sind Nützlinge zur nachhaltigen und effektiven Bekämpfung von Trauermücken und deren...
  • Die Nematoden gegen Trauermücken können als Spritz- oder Gießmittel mit Sprühgerät oder Gießkanne in Gewächshäusern,...

Fight fungus gnats effectively

In private households, nematodes are most commonly used against the larvae of the fungus fly or fungus gnat. The larvae of this annoying mosquito reproduce in wet plant soil and after hatching, countless small black flies fly around the house, similar to fruit mosquitoes. Anyone suffering from such a symptom should first look out for the infested plant. The nematodes are supplied as a kind of powder. This powder is poured into a watering can and the infested plant is then watered with this water according to the enclosed instructions for use.

Substral Naturen Gelbstecker, Gelbsticker, insektizidfreie Leimfallen zum Schutz von Zierpflanzen, 15 Stück
  • Naturen Gelbstecker locken die Schädlinge an und halten sie fest. Sie sind mit einem geruchlosen Spezialleim mit langer...
  • Packung mit fünf teilbaren Gelbtafeln (ergeben 10 kleinere Formen), sowie fünf dekorative Tulpenformen

Thus the larvae in the plant soil are destroyed, but the already hatched fungus gnats still fly around in the apartment. To catch the hatched specimens as well, the use of so-called yellow plugs is recommended. The yellow, sticky plugs are placed above ground near the infested plant. The fungus gnats then fly onto the sticky surface of the yellow plugs and die there.

After about 3 days there should be a considerable improvement and after about 1 week most fungus gnats and larvae should be history.

 

Prevent moist potting soil and fungus gnats

Most pests in the soil of indoor plants are due to excessively moist plant soil. The use of plant granulate can help here:

  • Plant granulate stores water, but does not release it in excessive quantities to the roots. Plants are not over-watered and pests do not settle.
  • Plant granulate does not provide a breeding ground for pests. They cannot move in the plant granulate and cannot find food there.
Seramis Ton-Granulat für Zimmerpflanzen 15 Liter
  • Hochwertiges, wasserspeicherndes Pflanz-Granulat für alle in Erde gezogenen Zimmerpflanzen (Grün-und Blühpflanzen)
  • Die einzigartige poröse Struktur des Pflanz-Granulates ermöglicht ein optimales Pflanzenwachstum

 

All the links in this text are Amazon Affiliate Links, and by clicking on an affiliate link I will earn a percentage of your subsequent Amazon purchases. However, this circumstance does not influence the background of my product recommendation. This product recommendation is independent, honest and sincere. 

Bei allen genannten Links handelt es sich um Amazon-Affiliate-Links. Durch einen Klick auf einen Affiliate-Link werde ich prozentual an Euren darauf folgenden Amazon-Einkäufen beteiligt. Dieser Umstand beeinflusst aber nicht die Hintergründe meiner Produktempfehlung. Diese Produktempfehlung erfolgt unabhängig, ehrlich und aufrichtig.