Pouring bacon grease, cooking oil, or gravy down the kitchen sink is a slow-motion crime. Hot grease is liquid, but as it travels down the cool iron or PVC pipe, it solidifies. Over years, this creates a hard, soapy, concrete-like layer inside the pipe. Eventually, the pipe’s 4-inch diameter shrinks to 1 inch, and a single grain of rice can trigger a total blockage.
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. main drainage pipe clogged
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. Pouring bacon grease, cooking oil, or gravy down