It would have been helpful if the author had stated which variety of bean leaves - lima, green, pinto, fava?
The video linked in the article identifies them as kidney bean leaves.
Kidney Beans
kidney bean leaves
you can google it
Ok, found another article that states it is kidney bean leaves and more specifically the underside of the kidney bean leaf having the hooks. Now, if only they’d said which side to place upwards. If the bedbugs crawl across the floor, then bottom side down or if they fall off from up high somewhere and onto the leaves then bottom side up. Maybe just go with half one way and half the other. Wonder if this works with other bugs? Wonder if other varieties of bean leaves work, too. Squash and cucumbers have hairy leaves but it doesn’t slow down squash bugs so there’s something unique with the kidney bean leaves. This might explain why beans usually aren’t bothered by bugs. Hmm, something to think about.
http://www.redorbit.com/news/science/1112819742/bean-leaves-natural-pesticide-bedbugs-041013/
The first response to the article from David B of Maryland mentioned kidney bean leaf, but he too asked which variety? So, now you know where to google.
Good info here: www.richsoil.com/diatomaceous-earth.jsp
Has good info on flea control and bed bug control. See also:
http://www.wired.com/wiredscience/2013/04/biomimetic-bedbug-snare/alex Keenan
Kidney beans (Phaseolus vulgaris L.) were raised from seeds (Johnny’s Seeds, Product 2554).
Jumpin'
Kidney bean leaves
Jelly Bean leaves.
Fava, with a nice chianti.