[Scythian]

This could be where they got the original nematodes, only it's only speculation, however, these articles ought to let you know how real this is
See http://www.ars.usda.gov/is/AR/archive/apr97/sapbeetle0497.htm

If you read that article you might begin to understand what they are doing, but these have been released into the environment by the trillions, I am living proof and infected by them, and soon, you will be too, there is literally no stopping them.

See: http://www.aphis.usda.gov/brs/arthropod/permits/9605201r/9605201r.html(Evidence of its use, just the beginning of the iceburg)

[Scythian]

From the field study and release:

EPA does not regulate insecticidal nematodes (Gorsuch, 1982), including genetically engineered strains (Andersen, personal communication). USDA-APHIS routinely issues courtesy permits for nontransgenic H. bacteriophora. The transgenic form of H. bacteriophora I am proposing to field release does not contain new traits likely to alter the pre-existing relationship with other organisms in the environment (see Enclosure B). Researchers working with Caenorhabditis elegans neither require nor request permits because field releases are not considered for this research model.

Look at that link I posted folks, these guys crossed a nematode (tiny worm) with jelly fish and other things and say, ya, it's not likely to harm anything but the exact bugs were after, sheeze, and you guys keep rolling in with the one liners, oh well, a lie travels around the world while the truth is still strapping it's boots on.

night guys .... don't let the bed bugs bite, cause when they do your life will never be the same.