The IGRs end up in the blood stream of the pet, and female fleas that feed on the blood lay eggs that will not hatch. This is most successful when used on pests which rarely go outside. Insect traps can use color or odors to attract a particular insect species to sticky cards. They can be used for spotted cucumber beetles. 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.