Squishing them! --- And there's a scientific reason for this: When you squish an ant, it releases pheromones that signal to members of its colony that they should retrieve its body or mount an attack on a threat. Ants are very fastidious, so they keep their nest very clean and they keep their trails clean. Because of this, they don't let a dead member of the colony remain near one of their pheromone trails. When they get the distress signal via pheromones, worker ants quickly assemble and remove the body. So what starts as a tangle with a single ant can often result in what looks like a swarm of ants, with many, many more gathering at the site of the squishing. Have you ever had ants in your home?