The answer to 'mouse swarms' is that mouse infestations can happen when there is an abundance of food and shelter available, leading to rapid population growth. Symptoms may include seeing numerous mice, finding droppings, hearing noises in walls or ceilings, and damage to food and property. Solutions depend on the severity of the infestation, but often involve a combination of exclusion, sanitation, and population control measures.
For minor infestations, homeowners may be able to address the problem themselves through trapping, sealing entry points, and removing food sources. However, for larger or persistent mouse problems, it's best to call in a professional pest control technician. They have the expertise and tools to properly identify the root causes, implement effective treatment, and prevent future infestations.