The answer to 'why is my mouse swarms' is that a mouse infestation is often caused by an abundance of food, shelter, and breeding opportunities. Mice are prolific breeders, and a single pair can produce up to 60 offspring per year. Symptoms of a mouse infestation include droppings, gnaw marks, and damaged food packaging. To solve the problem, it's important to identify and eliminate the source of the infestation, such as sealing up entry points, removing food sources, and using traps or baits.
If the mouse problem persists or becomes severe, it's best to call a professional pest control technician. They have the expertise and equipment to effectively eliminate the infestation and prevent future issues. DIY methods may work in some cases, but a professional can provide a more comprehensive and long-lasting solution.