The answer to 'mouse season' is that mice can be a year-round problem for homeowners, but certain times of year are more prone to mouse infestations. Mice typically seek warmth and shelter as the weather gets colder, leading to an increase in mouse activity and home invasions during the fall and winter months.
Mice are opportunistic pests that can enter homes through very small openings, often taking advantage of cracks and crevices to gain access. While mice can be a nuisance any time of year, homeowners should be especially vigilant about sealing up entry points and monitoring for signs of mice as the temperatures drop.