Found these strange dirt-like veins running up my basement wall. They crumble when touched but seem hollow inside. Do I have a leak or something else?

Out of Your Basement
To prevent future infestations, maintain a dry, well-ventilated basement, as termites thrive in moist environments. Use dehumidifiers and ensure proper drainage around your home to prevent water accumulation.
Regularly inspect and seal any cracks or gaps in your foundation, and keep wooden structures away from soil contact. Additionally,continue reading …