Due to these insecticidal properties the bacteria was used as an biological insecticide, commercially developed in 1938.

Also, some are used as biological insecticides and pesticides, mostly due to their insect-repellant nature.

This has led to interest in using these fungi as a form of biological insecticide.

Among biological insecticides, the nematode species Steinernema feltiae and S. carpocapsae show promise.

In light of this work and the known existence of cryptic species, it is important to characterise isolates used to develop biological insecticides.

Beauveria bassiana can be used as a biological insecticide to control a number of pests such as termites, whiteflies, and many other insects.

Some strains do have a wide host range and should therefore be considered nonselective biological insecticides.

If you have a lot of plants and don't want to use any of the usual chemicals, try a biological insecticide.

See the desert locust page for more on use of Metarhizium as a biological insecticide.

The bacteria is now sprayed on crops as a biological insecticide, but researchers have been figuring out ways to get plants themselves to start producing the proteins.