They don’t like cinnamon either. Sprinkle it across path.
Some like grease, some like sugar, some seek water. Make sure something has not spilled or leaked to draw them. Also even a small water leak under a sink or behind a wall can attract them sometimes.
I’m not sure about that. Have never seen them nest in walls, only see their anthills outside where I live. May have to ask an expert about that.
yes, that works well.
so spy is the what the kids are calling comrade these days.