The answer to 'why is my flea trails' is that the appearance of flea trails is a common sign of a flea infestation in your home. Flea trails are the visible paths or tracks left behind by fleas as they move across surfaces like carpets, furniture, and pet bedding.
Fleas are small, wingless insects that feed on the blood of their host, which is often a pet or even a human. When a flea infestation occurs, you may notice these distinctive flea trails as the fleas move around looking for a suitable host to feed on. The trails are created by the fleas' movement and can be a telltale sign that you have a flea problem that needs to be addressed.