I used to take them down to put them back up in the eves of Terry Combs house. We would spray them with water until they fell, pick the nest, and put it in a jar, wait for them to get dry and land on the nest, put the lid (with holes of course) on and take it back to his house. Then dump them out, wait for them to settle again, spray hem wet and put the nest up. I suppose we could have easily dissected it when it was free of wasps instead of putting them in the jar.