Ok I have a thrip infestation in my myoporum hedge. I released 3000 lady bugs to no avail. Sprayed diaznon...not working. I am not ready to rip out the hedge quite yet as it is a major sight block between my house and the neighbors. And the fence on that side of the yard is only hogwire. Help! At this point I am very concerned they will move to my citrus and avocado trees.