 Another thing Malcolm used to recommend, and we still recommend, if you have a wasp nest in an area where you don't want them to come back, you leave the wasp nest there, whether you've knocked them down with soap or whatever, soap or orange oil. If you don't want them to come back and rebuild there, one of the things you can do is leave the nest there. They tend to not, well, they won't come back to the nest, the same nest for sure,