The answer to 'why is my cockroach scratching sounds' is that cockroaches often make scratching or scurrying sounds as they move around. This is a common behavior and sign of a cockroach infestation in your home. Cockroaches make these sounds as they move through walls, cabinets, and other areas looking for food and water.
The scratching or scurrying sounds are typically caused by the cockroaches' hard exoskeletons and legs moving across surfaces. The sounds may be more noticeable at night when cockroaches are most active. If you're hearing these sounds, it's a good indication that you have a cockroach problem that needs to be addressed.