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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.
A heavy-duty mop head (string style) or a large rag wrapped around a sturdy broom handle. Duct tape. how to unclog main sewer line without a snake
A "drain bladder" or "sewer jetter bladder" ($10–20 at hardware stores). Before starting any method, confirm which pipe is