Comment from a Wasp expert on the BBC's "Infinite Monkey Cage" podcast:
(Starts at 17'32" )
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"The colony grows exponentially, and all those workers are your pest controllers in your garden. They're foraging away. They're eating your caterpillars on your cabbages and your aphids on your tomato plants, doing a great job. And then it gets to about August and then you discover the nest.
"And by this time, it's maybe got 10,000 workers. But until that point, you'd not realised it was there. And you'd lived quite happily alongside those wasps, no problems. And then suddenly, as soon as you discover that nest, you decide that it has to go.
"And so you call up the pest control and you kill it. If you don't do that, and you allow it to live until the end of its colony cycle, in late September, the sexuals will emerge, next year's queens and the males. And they go off and have a mating flight. And the males mate, die, and the females are mated and they go into hibernation. And the rest of the colony will completely die.
"So if you've got a nest in your attic or shed from a previous year, it's not like honeybees. They won't be there year after year. The whole colony will die at the end of the summer."
"So we really should, if you find a colony in August, September, you should leave it?"
"You've only got to tolerate them another few weeks. And the point is that you have lived with that wasp nest for months, and you've not noticed them."
Which species is 'better': bees or wasps? Brian Cox and Robin Ince find out.
www.bbc.co.uk