Opened the nest box just now - the one with the wasps' nest in. OH had scraped the outside bits off, probably before Christmas. I hadn't realised he hadn't cleaned the inside out until the other week.
There's still some stuck inside, which I'll clean out another day. Of course it had become a bit decayed and dusty but also mouldy in places where it's still stuck to the walls and roof of the box.
There were two wasps visible in there - one deceased, no more, the other one was dozy and flew away quite soon after the sun had been on the nest a little while.