I have 4 or 5 wasp nests to take care of. Dawn soap and water or vinegar... thick on the soap. They die in 30 seconds and cant fly away either. But if you miss.. you better run. I have piss off a large nest before of red ones and I was trapped in my house for a good few hours. They were looking for my ass waiting for me to come out side for fucking up their nest.
Most of the time when they are starting out they are fine. When they have lots of babies they get aggressive big time. Otherwise just keep you eyes on them and they leave you alone. They know when you are watching them and wont come at you face first unless very pissed. By that time you best be running because they are attacking.