take a glass and a peace of firm paper or thin cardboard. place the glass over the wasp and slide the glass onto the paper or cardboard. take the wasp outside and lift the glass.
killing wasps means more bugs that they eat invading your space, wasps are a good thing.
Open the window fully
Catch it using two glasses or cups.
Turn the oven on, turn all the sinks on and just leave for 3 days