TT 300.......the natural world

And these wasps are still constructing their natural world. 
I blipped them at the beginning of Feb and it’s obvious how the nest has grown. I’ve added two images because I think there are eggs or larvae or whatever in the holes and they seem to be covering them with the white stuff. I don’t know what they are doing actually. Everyone says kill them but I’m loathe to do so. I’ve never been stung but the Driver has, years ago.

Maybe one of you buggy type blippers can shed some light on to this natural world ;-))