It is a natural product made in the plant much as nicotine, another natural insecticide, is made in tobacco plants. Pyrethrin is useful against fleas, especially since fleas have become resistant to the synthetic products formerly used to control them. Refer to the label, because this natural product is useful against other pests in and around the home. 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.