Its production may contain traces of hair, textile fibers, plant remains, clothing threads, grains of sand, dust, and tiny fragments of animal or plant origin.
This is why the appearance of the case varies depending on where it is located: it can be lighter or darker, rough or smooth, blending into the surface on which it is placed and easily going unnoticed.
These small cases are usually found in areas they consider protected in the house, such as coins, behind furniture, in high ceilings, or in places that are not cleaned frequently.
