Mice are common household pets, but in the wild they can become very bothersome household pests. Mice can sneak into homes through a hole about the size of a dime in order to find food or shelter from their natural outdoor habitats. Once inside mice make their homes in quiet spaces out of spare materials, such as string and insulation. Once inside a home, mice’s their diet consists of any spare food, but in nature they typically eat grains, seeds and sweets. Mice do not need to regularly drink water because they obtain it from the moisture in their food.