The answer to 'why is my termite scratching sounds' is that the scratching noise is a common sign of an active termite infestation in your home. Termites make this sound as they tunnel through wood and other cellulose-based materials to feed. The scratching is caused by their mandibles (jaws) scraping against the wood as they move.
If you hear this sound, it's a clear indication that you have a termite problem that needs to be addressed promptly. Termites can cause significant structural damage to your home if left untreated, so it's important to take action as soon as you notice the signs.