A rat or mouse problem inside a home or business can pose a big threat to both health and property. Various types of common rodents are known to spread Salmonella and other bacteria. They are also capable of triggering allergies and asthma attacks. They can also carry disease-causing parasites, such as ticks, fleas and lice. In addition to these health threats, rodents are known to damage drywall as well as wood and can also chew through electrical wires, increasing the risk of electrical fires. Common Types of Rodents Deer Mice Deer mice are found throughout the United States. Deer mice prefer to nest in rural areas in places like old ...