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Hovis-
So I think ideally you’d find where they’re coming and going and probably have a nest. If you can find them then you can get some spray and they will pass that onto one another and kill the nest.
I’d undo the sockets from the wall and place smoke bombs next to each of them. Shut all the doors and let that do it’s business too.
Tenderloin
Could try out some of those insect smoke bombs - they’re jolly effective.
Really sorry dude!