The answer to 'which is worse mouse or' is that mice and rats are both serious pests that can cause significant problems for homeowners. While mice are generally smaller and less aggressive than rats, they can still carry diseases, contaminate food, and cause structural damage through their gnawing and nesting behaviors.
Rats, on the other hand, are typically larger, more aggressive, and can pose an even greater threat. They are known to carry a wider range of diseases, including Hantavirus and Salmonella, and their powerful jaws can cause more extensive damage to a home's structure, wiring, and insulation. Rats also tend to be more difficult to get rid of, as they are generally more wary and harder to trap or eliminate.