Đi theo lũ kiến để xác định tổ của chúng. Chuẩn bị một nồi nước sôi. Rót nước sôi vào tổ kiến. Kiểm tra kiến trong một vài ngày sau. Bịt kín lối vào tổ kiến nếu bạn không thể lấy tổ kiến ra được.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
If ants keep swarming your house no matter what sprays and traps you employ, you'll need to attack them at their source: the nest. When you see a trail of ants marching inside, follow it as far as you can to find the anthill. Depending on the species of ant you're dealing with, the nest may be out in the open, hidden carefully in rocks or hedges, or inside your house.    Little black ants are one of the most common home invaders. These ants walk in long, slow lines, giving away their nest sites