Final answer:
When searching for bed bugs, it is important to inspect all potential harborage sites such as peeling wallpaper, bed frames, furniture, and cracks/crevices, as bed bugs can hide in very small and diverse areas.
Step-by-step explanation:
When inspecting for bed bugs, various harborage sites should be thoroughly checked. This includes areas such as peeling wallpaper, significantly around bed frames and other furniture, as well as any cracks/crevices in the room. It's crucial to examine all potential hiding places where bed bugs can reside, as they are known for being elusive and can hide in very small spaces.
The quotation 'I presume you looked to the mirrors, between the boards and the plates, and you probed the beds and the bed-clothes, as well as the curtains and carpets.' underscores the need to investigate all possible areas, including less obvious ones such as behind mirrors and within various layers of bedding.