These microscopic transparent parasitic nematodes worms called Steinernema feed and mulltiply inside the Leatherjacket larvae causing death.
Supplied as an easy to mix powder to be diluted with water before use.
Apply to moist / soil using a watering can or sprayer.
Use between September and October for effective control.
A second treatment can be applied the following spring or in mild autumns.
Area treated 10 m 2.