Has anyone in Chicago proper has difficulties with whiteflies? I didnt' have any the first year I set up the containers, but the past 3-4 years they have been brutal. I typically only have a few tomatoes, a couple of peppers, some herbs and some flowers. The tomatoes are hardest hit each year.
If you have them, what have you tried to get rid of them and how has it affected your yield? I've used high-power water spray, soap, yellow sticky mats, and once in a last ditch attempt to control them, some chemical. None of these really controlled them and over the summer I steadily lose plant foliage and fruit.