After clearing the clog, flush 5 gallons of hot water once a month to prevent recurrence. If you have to repeat these methods every 2 weeks, you likely have tree roots or a broken pipe—a snake won’t fix that either.
Before starting any method, confirm which pipe is your main cleanout (a white/black pipe with a square knob or cap, usually near your foundation or yard). Opening the wrong pipe can flood your house. Method 1: The Hot Water & Dish Soap Flush (For Grease Clogs) Best for: Slow drains, sinks backing up, greasy buildup. how to unclog main sewer line without a snake
A heavy-duty mop head (string style) or a large rag wrapped around a sturdy broom handle. Duct tape. After clearing the clog, flush 5 gallons of
A "drain bladder" or "sewer jetter bladder" ($10–20 at hardware stores). Opening the wrong pipe can flood your house