The answer to 'mouse swarms' is that a large number of mice infesting a home is often a sign of a serious pest control problem that requires professional treatment. Mouse swarms can be caused by factors like easily accessible food sources, poor sanitation, or warm nesting areas in the home. Symptoms may include seeing many mice, finding droppings, hearing noises in the walls, or seeing damage to food and property.
In most cases, a mouse swarm indicates that you have a large, established mouse population that will be difficult to eliminate on your own. DIY methods like traps and repellents may provide temporary relief, but are unlikely to fully resolve the issue. Calling a licensed pest control professional is usually the best way to get rid of a mouse swarm and prevent future infestations.