The answer to 'why is my rodent infestation' is that rodent infestations are typically caused by the presence of food, water, and shelter that attracts them to your home. Common signs of a rodent problem include droppings, gnaw marks, and nests. To solve a rodent infestation, you'll need to identify and remove the sources attracting them, seal entry points, and use effective trapping or deterrent methods.
Rodents can carry diseases and cause significant property damage, so it's important to address an infestation promptly. In many cases, a professional pest control service may be the best solution, as they have the expertise and tools to effectively eliminate the problem.