I got rid of one earlier this week nesting in the cavity at the side of the front door, I didn't mind them and they never really bothered me till I got stung twice and that was enough, which after coexisting for a couple of months without issue seemed it would get worse.
So I armed myself with a few cans of killer and just sprayed them as they were going in and coming out of the nest, once thinned out I then sprayed directly into the hole going in to the cavity, left it for a few hours then got any that were hanging around and later filled the cavity with expanding foam to seal it all up, no sign of any at all now