Something else for Floridians to worry about – Bigheaded Ants. An invasive species from Indian Ocean island of Mauritius, the good news is that the aggressive ants will attack Fire Ants and Bigheaded Ants’ stingers are too small to penetrate people’s skin the way fire ants do. However, they reproduce rapidly and their nests can stretch for hundreds of feet. They likely arrived in Florida from ships docking in Miami and the Keys in the early part of the 20th century and are becoming a problem in the southwest part of the state. Biologists say they are a threat to native insects and can disrupt the local ecology, they can damage lawns and kill trees, and will come into homes seeking food. Exterminating them usually requires a professional because the whole inside of the house has to be treated and the outside of the house has to be sprayed or baited to get rid of the ants.