Nematodes have been around commercially for a long time, however, they have always been scarce in the retail scene. These beneficial microscopic worm-like cretures attack all sorts of ground dwelling garden pests including white grubs, the larvae or the European chafer, Japanese beetle and June beetle.
Nematodes also control leather jackets. But what is most exciting is they control fungus gnats, onion maggots and cutworms. It's been a while since we've had a product that gets these damaging pests.
The commercial product now available is called Grub Busters
Credit for this information to my friend Don Burnett