In most cases, the pest controller applies an insecticide near the nest entrance. The wasps will bring the chemical inside, which will kill them after a couple of days.
Q: HOW LONG DO THEY LIVE?
Adult worker wasps can live between 12 – 22 days while the queen will survive for the entire year until the cold causes the colony to die off. If you are accounting the time that it takes for a wasp egg to develop into an adult, it can take between 40 - 60 days depending on external environmental factors.