Wasp Update

I fear I am loosing my war with the wasps. Despite fogging the heck out of them, Kevin said he saw another wasp in the room above the garage. As I write this, I am sitting out on my back deck and have had several close encounters with varying varieties of the buggers, or at least varying colors-one was typical yellow/black and the other was a reddish orange color. We bought this foam that states in bold letters "Guaranteed to kill on contact". I sprayed the heck out of one on our roof and coated it in this foam. I watched it crawl out of the foam and after about 15 seconds fly away as though it had not been touched. I also have had several 'misses' on the spraying attempts and also one that snuck up on me and came between me and my bug spray. I am proud to say I have taken out two in the past 30 minutes, but I know there are many more out there. Wish me luck.