system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 how do a small ant find its way to a sweet food on top of the shelf’s and manage to call his fellow ants and invade the whole area in manner of 24hrs?
gpt
Ants leave a trail of chemical signals called pheremone wherever they go. There are a few different types of pheremone including one that tells other ants "this way to yummy food", so when an ant finds a food source, she will eat her fill and head back to the colony, leaving a chemical "road" for her sisters to follow back to the food.