Its not that time of year yet. You wait till September when they are numerous and all fighty because they have been bingeing on fermenting apples. Pissed fighty wasps - Don't leave home without an aerosol and a lighter.
Those Vapona things that look like air fresheners. For enclosed spaces (loft, shed) they seem to do a decent job, whether killing or more likely stinking them out to a better neighbourhood.
