So I had a thrip problem in my grow room and was deciding what route to go down to solve issue. After a sleepless night and loads of research I had a brainwave, I also grow pinguicula's (flycatchers) so decided to put them in grow room and BINGO a lot were caught on the sticky leaves of the pings (short for pinguicula), so no chemicals needed and I imagine these plants would catch any bugs silly enough to crawl over the leaves,hope this will help anyone else with a bug issue in grow room.