Yellow jacket battle round 3: overkill nuclear option?

I have a problem with fall coming on with yellow jackets attempting to take over the bay window in front of my house. Round one, I had an old can of wasp spray in the shed and I hosed the entry/egress area. The next day, they were still flying around just as numerous as ever. Round 2, I upped the ante and found some Black flag spray that specifically mentioned Yellow Jackets. I emptied the whole can on the same area. This morning, same deal. It’s as if they were mutants and liked the stuff. For round 3 I tried a powdered Sevin approach using the nozzle from my sand blaster from the bag and let them eat about 2 pounds of the stuff. They seemed pretty angry after I hosed them down but I saw no bodies on the ground. Is there a next more nuclear option save gasoline to knock these things out?