Research has shown that ants communicate with one another using a variety of methods: chemicals (pheromones), touch, body language, and even sound. Using pheromones and their antennae, ants communicate messages to each other. Ants also use touch to communicate by laying out scent trails to food sources for other colony members to use. Scientists have also found that ants communicate with each other with sound by scraping their legs on their bodies. Although we as humans cannot hear it, these sounds can be used to signal a variety of messages amongst a colony.