The answer to 'fire ant scratching sounds' is that fire ants can make scratching or rustling sounds as they build their mounds and move through the soil. This is a common sign of a fire ant infestation. Fire ants are aggressive insects that build complex underground nests, and the sound of their activity can often be heard near the mound.
The scratching or rustling sounds are caused by the movement and tunneling of the fire ants as they construct their nests and forage for food. The sounds may be more noticeable in the early morning or evening when the ants are most active. If you hear these sounds near your home, it's a good indication that you have a fire ant problem that should be addressed.