Yes, I do use wasps spray when I find a nest, but I have a harder time finding the nest lately since the backyard now looks like a jungle. I have so many wasps that I get stung regularly. They are everywhere in my yard. I wished they would eat aphids and other bugs, not my caterpillars. But I need to reduce the population down to a minimum unlike how it is currently. Even the hummers have to fend for themselves against the wasps. It really makes me mad that I have so many! Where is nature's balance? This increased wasps population has been going on in my backyard for several years now .....