I seem plagued with thrips.  Having a partner that had recently completed her PhD in the field of agricultural biological control agents we decided to embark on a experiment in terms of controlling different forms of insect control. Her research primarily focused on that of specific nematode species. These are tiny worms that live in the soil and exert specific types of host seeking behavior in order to track down their pray. This got me tracking down a few companies, notably Jamies garden which