The answer to 'which is worse rodent or' is that rodents are generally considered worse pests than insects. Rodents like mice and rats can cause significantly more damage to homes, contaminate food, and spread diseases, while insects like ants or cockroaches are typically less destructive and pose fewer health risks.
Rodents have sharp teeth that allow them to chew through walls, insulation, electrical wiring, and other materials, leading to structural damage and fire hazards. They also reproduce quickly and can establish large infestations that are difficult to control. Rodents can spread illnesses like hantavirus, salmonella, and plague through their droppings and urine. In contrast, most common household insects, while unpleasant, do not pose the same level of threat to a home or its occupants.