Are mice dirtier than rats?

Mice are not necessarily dirtier than rats, both are considered unhygienic pests that can contaminate homes, but they differ in behavior and the type of mess they create. Rats are larger, produce more droppings and urine volume, and tend to cause more structural damage through stronger gnawing on wood, pipes, and wires. Their droppings are larger and they often create greasy rub marks along walls. Mice produce many small droppings, up to seventy per day per mouse, scattered everywhere they travel, and they urinate constantly in small amounts to mark territory, which can spread contamination over a wide area. In terms of disease risk, both carry serious pathogens like salmonella, leptospirosis, and hantavirus, though certain hantavirus strains are more associated with deer mice. Rats are often associated with more severe infestations of fleas and are historically linked to plague, though modern risk is low. From a cleanliness perspective, a house with many mice can become just as unsanitary as one with rats because of the sheer number of droppings and urine spots. Neither is clean, and both require prompt removal, thorough disinfection with gloves and mask, and sealing of food. So it is not accurate to say mice are cleaner than rats, both pose similar hygiene problems.