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The nematodes kill the Asparagus larvae while it is feeding on the foliage of the Asparagus plants
Caterpillar Killer contains Steinernema species nematodes for the effective biological control of caterpillars. The nematodes enter the caterpillars via a natural opening, like the mouth, and feed on the contents of the caterpillar. A natural bacterium is produced by the nematodes inside the caterpillar, which kills it. The nematodes also reproduce inside the caterpillar, releasing more nematodes into the surrounding area.
PLEASE NOTE - As these are live creatures, they are bred in batches to be as fresh as possible and so your nematodes will be prepared to order and despatched in approx 5 working days depending on demand.