AKA – Bed Bug Sign, Bed Bug Evidence, Bed Bug Blood Stains, Bed Bug Droppings, Bed Bug Poop!
Fecal marks are blood stains resulting from a bed bug bite. They are often visible on lighter-colored sheets and pillow cases. The stains are typically dark or rusty spots of excrement. Fecal marks won’t always be found on bedding, they can also be visible on furniture, clothes, and even walls.
Unlike blood stains, fecal spotting tends to be black or dark in color. The stains are from partially digested blood and usually clustered in groups around areas that bed bugs inhabit. The spots will smear if sprayed with liquid or wiped with a wet rag. Evidence of fecal spotting is usually visible in their typical hideouts, such as mattress seams and edges and corners of boxsprings.