Does anybody have some cheap wasp-repellent ideas?
You can buy plenty of chemicals that will kill wasps. The easiest thing to do would be to find their nests and spray them. As for a cheap solution to annoying stragglers. You can take a 20 oz. soda bottle and cut off the top 2 inches of it. (cut it fairly straight) Flip the top upside down so it is like a funnel going into the bottle. Pour in a cup of regular soda (non-diet), sugar water, or even beer! They will go right through the funnel in and won’t be able to find their way out. Place a few of these around the yard in inconspicuous places. Cheap and odor-free!