After my efforts of last week, I was devastated to see three more queens make their way out of another section of skirting board. I ended up sealing the entire length of wall, between wooden floor and skirt, with clear silicone sealant. The exterior on the pavement side needs re-filleting before the house turns into Insect World. It's becoming a mania. These ants are haunting my dreams. My fear now is that it'll happen in the living room. Twitchy.