Ants don’t just stumble inside by accident. They’re following a chemical map called a pheromone trail—like a breadcrumb trail, but invisible to us and way creepier. One scout ant finds a crumb of your granola bar, and boom: she leaves a stinky highway for her entire colony to follow.
That trail can last for hours, even after you’ve wiped the counter. So when you see a line of ants, it’s not a random parade; it’s a highway system they built with their butts. (Yes, their butts are GPS devices. Nature is weird.)