Funny you should mention that. My terrarium is, well, 50% of the plants in there are Pinguiculas... natures very own sticky-leaved fly-papers. And you are correct, they have apparently been feasting on the adult flies/gnats. I will get some Thrip Sticks though for my other grow rooms. Thanks everyone! Dennis in FROZEN Cincinnati On Sat, Dec 11, 2010 at 1:01 PM, David Fenwick Snr. < davidfenwicksnr@googlemail.com> wrote: > Dennis, > Try using 'Thrip Stick' . It's a non-chemical control similar to using > fly-paper. Thrip Stick is basically a piece of bright yellow plastic that > has a coating of polybutene, a highly sticky substance. Thrips are attracted > to the colour of the plastic and stick to it and die. I used to cut up the > plastic cards into 2-3 inch squares and place these on pea sticks in pots so > that they are at the same height as the flowers. The benefit of using 'Thrip > Stick' is that it will also catch other flies, like fungus gnat and wasps; > however it will also catch any biological control as well. They last for > months but if they are successful in catching flies, can look a bit > unsightly after a while. > > Found a good thrip link for you > http://www.biocontrol.ucr.edu/WFT.html (Western Flower Thrip) > > Best Wishes, > Dave > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >