The answer to 'why is my bed bug trails' is that bed bug trails, also known as fecal spotting, are a common sign of a bed bug infestation. Bed bugs leave behind small dark spots or streaks as they crawl, which are made up of their excrement and dried blood. These trails are often found on mattresses, box springs, bed frames, and nearby furniture or walls.
Bed bug trails indicate an active infestation and that the bugs are feeding and reproducing. The trails can appear as small brown, red, or black spots or smears. They are usually found in cracks, crevices, and other hiding spots where bed bugs reside. Seeing these trails is a clear sign that you have a bed bug problem that needs to be addressed.