Other workers have jobs such as slave-making, where the ants sneak into other ant colonies and steal eggs. Workers also herd and milk aphids. All workers generally live about four years. Colonies may consist of hundreds to thousands of members. If one ant does not do its job, the other ants will suffer from that ant's lack of responsibility.
New colonies form from older ones.
This is called budding. Some roles of the Argentine ant colony are unique. Part of the queen ant's role is to mate with the male ants of the colony. Argentine ants rarely swarm and they mate in the nest. Queens will leave the nest with a band of workers to start a new colony elsewhere.