The nematode then feeds and reproduces within the dead insect. Nematodes are excellent for combating larval cutworms, fleas and chinch bugs in the garden. They provide a safe alternative to insecticides and are available in an inactive form. They are activated with water and release at night following rain or watering. Natural enemies are called beneficials because they aid in controlling insect pests.
Predators attack, kill and eat prey.
Parasites lay eggs in or on a host which later hatch. Bacteria, fungi and viruses invade the host and cause disease. This can be utilized by designing a carbon dioxide tick trap. This control method is recommended by many Integrated Pest Management information sources, but it's effectiveness has not been proven by research. It may be an interesting technique to try.