The answer to 'why is my centipede scratching sounds' is that the scratching or scurrying sounds are likely caused by a centipede infestation in your home. Centipedes are nocturnal insects that can make audible sounds as they move around and search for food, especially at night. The scratching or scuttling noises are a common sign of a centipede problem.
Centipedes are attracted to warm, moist environments and can often be found in bathrooms, basements, or other damp areas of the home. They may also be drawn to sources of food, such as other insects or spiders. If you're hearing these sounds, it's a good idea to inspect your home for signs of a centipede infestation and take steps to address the issue.