What behavior do Carpenter Ants display to keep their galleries clean?

Carpenter ants exhibit a behavior where they actively expel most of the frass, which is the sawdust-like debris produced as they excavate wood to create their nests. This behavior is crucial for maintaining a clean and healthy environment within their galleries. By removing this waste material, they prevent the buildup of pathogens, mold, and other potential threats that could compromise the integrity of their nests or affect the health of the colony.

The act of expelling frass not only helps in sanitation but also reduces the risk of attracting other pests or predators that might be drawn to decaying organic matter. This instinctive behavior reflects the ants' adaptation to their environment and their need to sustain a thriving colony.