How Do I Unclog a Drain?
Topics
- Drain
- Clog
- Plunger
- P Trap
- Drain Snake
Answer
Most drain clogs are in the P-trap (the curved pipe under the sink) or just downstream of it — and they're DIY-fixable in 15–30 minutes without chemicals.
Try the plunger first
For sink drains: use a cup plunger (the simple dome shape). Block the overflow hole at the top of the sink with a wet rag (this creates suction). Fill the sink with 2–3 inches of water. Plunge vigorously with 10–15 strokes. If water drains: you're done.
For slow drains, try a drain snake
A $20 hand-crank drain snake (also called a drum auger) reaches 15–25 feet into the pipe. Feed the cable into the drain, crank clockwise while pushing forward. When you feel resistance, crank to break up or hook the clog. Retract slowly. Run hot water for 2 minutes to flush residue.
For hair clogs (bathroom sinks and tubs)
Hair clogs almost always sit in the P-trap or just inside the drain. A $3 plastic hair-clog removal tool (Zip-It style) often pulls out a shocking amount of hair on the first try — try this before anything else in a bathroom.
When to remove the P-trap
Place a bucket under the curved pipe beneath the sink. Unscrew the two slip-joint nuts (usually hand-tight). The clog often falls out when you remove the trap. Clean the trap, reinstall, hand-tighten the nuts (no tools needed — these should only be hand-tight to avoid cracking plastic), and test.
What not to do
Chemical drain cleaners (Drano, Liquid-Plumr) are hard on older pipes and joints, can cause chemical burns if they splash back during plunging, and often don't fully clear hair clogs — they just soften them temporarily. Use mechanical methods first.
When to call a plumber
If the clog is in multiple drains simultaneously, your main sewer line is blocked — this requires a professional drain snake or hydro-jetting. Signs: multiple drains back up at the same time, gurgling in the toilet when you run the sink.
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