I too sent a question last season that went unanswered so figured it was too mundane or something. I have flower thrips that are destroying my lovely roses and have finally used Neem..Bioneem to try and slow them down. I think someone on another list mentioned lacewings and I do see some and I also have giant praying mantis on my roses...but the thrips are way too many for them. Will let you know if the Neem product works. L Northern CAlifornia,zone 8