Eliminating a rodent infestation alone can be challenging. Preventing their return can require a sanitation program and structural changes. For truly effective rodent control, you need professional pest control services. Rats and mice can spread serious diseases. Even worse, some mice can carry and transmit Hantavirus, a rare respiratory disease, which can be fatal in humans and for which there is no known cure. These diseases can be spread directly through bites, body fluids and droppings or indirectly by parasites. In fact, mice can contaminate about 10 times as much food as they actually eat. Mice can even chew through inorganic, indigestible materials, damaging wiring, books, plastics, aluminum cans, drywall, insulation, siding, and wallboards.