Day 204/18. Nasty little squatters,

Wasps are a benefit to the environment, I understand that. But when a nest of wasps move into your house (through the air bricks, so not actually inside the living area, but in the cavity), you want them gone.
There are about 4 wasps per second leaving/arriving into the nest, I have no idea how many that means there are. But we want them gone.
Tomorrow a very nice man with a spacesuit and some wicked chemicals will arrive to persuade them to be gone.
A Note to anyone arriving at our front door....don't linger too long if we do not answer.