Few things are more unsettling for homeowners than realizing something may be living inside the structure of the house. Scratching sounds in the walls. Buzzing in the ceiling. Droppings appearing on a deck or floor. These problems are surprisingly common, and the cause is often an animal or insect colony that has found a way into the house structure. Quick Answer: What Animal Is Living in Your Walls? If you hear scratching, scurrying, chewing, buzzing, or movement inside your walls or ceiling, the cause may be mice, rats, squirrels, bats, birds, bees, wasps, or another pest using the structure of More…