Rodents are mostly found in the store where the crops or food is kept or they need a shelter to cover themselves so they mostly found in cooler month. They spread the Plague disease that contains the fever and chills. This happens because they taste our food that is uncovered.
To prevent your home from rodents keep all crumbs or food away or in tight container because they are the main source of infestation. Fruits or vegetables should be covered properly and at the night wash you sink properly make sure no wastage is in containers.