eli5 – How do ants know where there is sugar?

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How do ants know I’ve dropped a piece of candy in my room and gather their squad to eat it when there were no signs of ants previously? Do they smell that there’s sugar? Even so, how? The world seems so huge to them to know where to scout

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Anonymous 0 Comments

They send out scout ants, who search randomly. When they find something good, they return to the nest leaving a pheromone trail. There other ants that are leaving the nest out randomly searching follow the trail and strengthen it with their own trail. That’s how you end up with long trains of ants recovering food.

The initial search is random though. There are just a lot of ants, and you tend not to spot them moving around individuality

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