The parasitic wasp helps your garden by laying its own eggs inside the eggs of other harmful insects to your garden. When the wasp eggs hatch, the larvae eats the larvae of the eggs they are in, killing any future for adulthood of that harmful grub, worm, or insect. My hope was to use these to kill the worms that were growing in my apricots and other fruit. And if I'm lucky, maybe it will finally solve some of my ant problem in my yard!
You can order your own parasitic wasps at http://www.amazon.com/gp/product/B0050QK6YE/ref=as_li_ss_tl?tag=stnal-20