The answer to 'why is my rat invasion' is that rats have likely infested your home due to a combination of factors, including easy access to food sources, lack of proper sanitation, and nesting opportunities. Rats are highly adaptable and can thrive in both urban and rural environments, often taking advantage of human activities and structures.
Some common signs of a rat infestation include droppings, gnaw marks, noises in the walls or attic, and sightings of the rats themselves. Rats can pose serious health and property risks, as they can spread diseases, contaminate food, and cause structural damage through their gnawing behavior.