Hi, I am running out of ideas as to how to get rid of wasps at my bog. The bog if positioned in a high traffic area, so stings are frequent. I am somewhat limited as I need to protect the koi and my beehive. I have tried a number of traps and baits with little success. I believe I am dealing with European paper wasps and they seem uninterested in rotten fruit, fermented, fruit juice bait. Any suggestions will be greatly appreciated! Thanks!