For decades, a blocked sewer or stormwater pipe was a homeowner's worst nightmare. It usually meant one thing: excavation. The plumber would arrive, shake his head, and start digging up your prized rose garden or, worse, jackhammering through your driveway to reach the damaged pipe below. It was messy, expensive, and stressful. Blocked Drains Fortunately, the plumbing industry has undergone a technological revolution. Today, dealing with blocked drains rarely involves heavy m