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Sciarid Fly Predators (Steinernema Feltiae) Tray of 50 million Bulky To see our full GavitaCombat Sciarid Flies the Natural Way Nematode worms are a great way to take out sciarid flies. This tray comes with 50 million infective juveniles of the insect killing nematode, Steinernema feltiae. All you need to do is add them to some water and use them as a drench via the roots. Adult sciarid flies are commonly observed making short hops over the surface of compost. These flies can spread fungal diseases, but the most significant damage is caused
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