Yellow plastic dish pans filled with soapy water may be used to attract some aphids. Some traps use chemical bait to attract insect species. These nematodes are not to be confused with plant-parasitic nematodes which harm garden and landscape plants. The bacterium multiplies and kills the insect host within two days. 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.