If you ignore these whispers, the shouting will begin: raw sewage bubbling up through your downstairs tub, an inch of grey water on the garage floor, or the dreaded "gurgle-gush" from every drain in the house when you run the washing machine.

A plumber inserts a hose with a high-pressure nozzle (up to 4,000 PSI) into the line. It blasts water backward to scour the pipe walls, cutting through grease and flushing roots. This is the gold standard for cleaning, not just opening.

It starts subtly. The water in the shower takes a little longer to drain than it did yesterday. The toilet gurgles ominously after you flush, and a faint, foul smell wafts up from the basement floor drain.

For roots, a plumber uses a rotating blade on a cable to shred the roots. Note: This is temporary. The roots will grow back in 12-24 months.

This single pipe carries everything you flush or pour out of your house to either the municipal sewer system or your septic tank. It is the aorta of your wastewater system. When that artery gets blocked, every single fixture in the house above that blockage is compromised. Unlike the vertical drops inside your walls, the main drain runs horizontally (with a slight slope) under your concrete slab or basement floor and out to your yard. Its horizontal nature makes it prone to specific types of clogs.