WTF is going on with my backroom?

[Mr MXT]

We moved in a barn conversion in Oct '15. Odd things are afoot in the spare bedroom, which has a door directly to the outside down some stone stairs.

During the winter, hundreds of dead woodlice around the exterior door.

During the spring, hundreds of dead ladybirds around the exterior door.

Now, hundreds of dead wasps around the exterior door and a few live ones flying around.

What the hell is going on and what can I do to stop this insect invasion?

[Mr MXT]

The immediate wasp problem sorted.

Found a nest in the eaves at that corner of the house, looks like they were getting in via the extractor fan vent to the ensuite, then heading toward the light which is why they die by the door.

Liberal use of flamethrower later, problem solved.

[Mr MXT]

They didn't have their keys!

(It's a glass door)

[Mr MXT]

Ladybirds are back.

[Mr MXT]

Simpo Two said:

In February?

Yes