Nine.com.au. Fire ants are a pest, and their bites can be deadly to humans and animals. One of the world’s most destructive invasive species has been found inside a key Sydney logistics terminal, with officers racing to contain the threat before it spreads. Described by the Invasive Species Council as one of the world’s “super pests,” a colony of red fire ants was discovered in a shipyard at the Enfield Intermodal Logistics.