That's a nice job.
Rodents and I have a long and chequered history. My advice is:
Raise the box off the ground and place bait boxes below it - check these every week in the autumn and monthly over the winter - if bait goes missing - be vigilant.
Put a couple of baits in the box too. Have a dekko over the winter. I'd recommend a few slug baits too. Mice can enter a 6mm gap, slugs any gap at all. Obviously slugs won't eat your SIB, but they are dirty sh1tty little fkkrs that will foul and stain everything before them...
I have no issues with WASPS