Ok, I have in my possession traps, wire wool and foam sealant. Arriving tomorrow are the air brick covers, and I’ll try to get some mesh for the bigger ones as well.
So are we thinking best plan of attack is:
1. block up kitchen entry points with sealant / wire wool;
2. lay traps all over crawl space for tonight;
3. block up non-air brick external access points;
4. leave it a few days with traps out and checked before doing final covering of air bricks outside?
I figure that way it starts sealing up, while giving us a good chance of catching them in the meantime, and then once we’re reasonably happy we’ve got the lot, seal up the rest of the external points… Sounds sensible!
Cheers for advice, very helpful!