I think I may have had some experience with a ground wasps a few years ago. I had a raised flower bed and was sitting on it when dividing some daylilies and throwing them next to me as I divided them. All of a sudden I was swarmed with waspa and got about 5 stings. I just read that cicada ground wasps are passive stingers and only sting when they feel under attack. Guess a big person sitting beside their hole and throwing daylilies on top of it must have made them fell threatened. If these are the same type, I will say they can sting. I'm worried about my little 3 year old neighbor boy whose current favorite play activity is hitting the ground with a stick. I showed his parents where the hole is and told them to watch him, but think I will treat it anyway. The one a few years ago I sprayed with a high powered wasp killer spray and that seemed to work. Here is the information about the ammonia.
http://blog.yagelski.com/2011/...
