The answer to 'why is my rat nests' is that rats often build nests in hidden, secluded areas of a home to establish a safe place to live and raise their young. Rat nests are typically made from shredded materials like paper, cardboard, cloth, and insulation, and can be found in attics, walls, basements, garages, or other undisturbed spaces.
Some common signs of rat nests include droppings, gnaw marks, noises in the walls or ceiling, and nesting materials. Rats are prolific breeders, so a single nest can quickly lead to a larger infestation. If you suspect a rat problem, it's best to act quickly to address the issue before it gets out of hand.