Entonem Nematodes - 50 Million BIO04610 Steinernema FeltiaeEntonem Nematodes 50 Million BIO04610 Steinernema Feltiae What are Nematodes? Nematodes are naturally occurring microscopic roundworms, active in soil as well as other environments like freshwater. They can be used in a targeted manner as a form of natural, biological control for some common garden 'pests'. Nematodes are often used in commercial growing environments to ensure that crops, particularly young seedings, are protected from damage. They can