How do you get rid of wasps?

Is there a nest, or just wasps hanging around? If it's just visitors, keep bins shut and don't leave sweet drinks or fruit out, that's what draws them. If there's a nest: a small, exposed one early in the season you can spray with wasp foam at dusk when they're all in, standing well back. A big one, or one inside a wall or roof space, get someone in. And don't block the hole of a nest in a wall - they can chew their way out into the house instead.