While sitting here enjoy the evening breeze through the windows, we were suddenly inundated with a small cloud of fruit flies. Within seconds the lights were covered in them.
Running and closing the windows I grabbed the flyspray and liberally applied it. Killed about 80% of them, which means my living room floor is now covered with a carpet of them. The other 20% are still flying around happily, ignoring the chemical waves of flyspray.
In the end, we gave up and sat outdoors. Seeing as to how all the insects are inside, it seemed easier.