Final answer:
Telltale signs of rat or mice infestation include droppings, gnaw marks, and evidence of nesting. A scenario describing piles of meat mixed with rat droppings in a storage facility, and the use of a powerful microscope to detect furniture damage, exemplifies the subtle signs of rodent activity. Glass breaking overnight, however, is not a standard indicator of rodents.
Step-by-step explanation:
Signs that rats or mice may be present in an operation can include several indicators. One of the most telling signs is the presence of droppings or feces that these rodents leave behind. Considering a scene from a meat storage facility, imagine piles of meat and the presence of water from leaky roofs creating an ideal environment for rodent infestation. In such conditions, one could find evidence like handfuls of dried rat dung on the meat, a clear indicator of significant rat activity.
Additionally, another sign might be the presence of gnaw marks or damage to furniture or other parts of the premises. In the context of a hotel inspection, for example, using a powerful microscope to examine furniture joints could reveal disturbances such as gimlet-dust or glueing irregularities. These subtle indicators would suggest that furniture has been gnawed or tampered with, potentially by rodents seeking shelter or passage.
However, it's important to note that glass breaking overnight is not a typical sign of rodent activity, as rats or mice do not typically cause such loud and distinct noises unless there is a very large infestation and the structure is compromised. More common signs of rodents would include scratching sounds, especially at night, nests or shredded materials, and unpleasant odors from urine.