The answer to 'rat scratching sounds' is that common causes include rats nesting in your home, chewing on materials, or moving around inside walls or attics. Symptoms may include hearing scratching, squeaking, or scurrying sounds, especially at night. Solutions can include sealing entry points, using traps or baits, and removing food sources to drive the rats out.
If the scratching sounds persist or you spot signs of a rat infestation, it's best to call a professional pest control technician. Rats can carry diseases and cause significant property damage, so it's important to address the problem quickly and effectively.