The answer to 'why is my rat invasion' is that rats are attracted to your home due to readily available food sources, nesting materials, and shelter. Common causes include improperly stored food, clutter, and entry points like cracks and gaps in your home's exterior. Symptoms may include droppings, gnaw marks, and noises in the walls or attic. To solve a rat problem, you'll need to eliminate their access to food, water, and nesting spots, as well as seal any potential entry points.
While some minor rat control measures can be done yourself, such as sealing cracks and using traps, it's often best to call a professional pest control technician. They have the expertise and equipment to properly identify the extent of the infestation, implement effective long-term solutions, and ensure the problem is fully resolved.