A hand-held drain auger (also called a plumber's snake) is a practical, affordable tool that can clear most household drain blockages without harsh chemicals. Used correctly, it can shift hair clogs, soap build-up, and soft debris from sinks, showers, and baths in under 30 minutes. Here's how to do it properly.
What Is a Hand-Held Drain Auger?
A hand-held drain auger is a flexible metal coil — typically 5–15 metres long — wound inside a drum or handle. You feed the coil into the drain, rotate it to snag or break up the blockage, then withdraw it. Most models have a hand-crank handle and a locking thumb screw to control how much cable extends. You can find them at Bunnings or Mitre 10 for a broad range of options.
What You'll Need
- Hand-held drain auger
- Rubber gloves (heavy-duty)
- Safety glasses
- Old towels or a bucket
- A torch
- Pliers (optional, for stubborn clogs)
- Disinfectant spray and paper towels for clean-up
Step-by-Step: Using a Drain Auger Correctly
1. Prepare the Area
Put on your rubber gloves and safety glasses — drain water and debris can splash back unexpectedly. Lay old towels around the drain opening and have a bucket nearby. Remove any drain cover or strainer.
2. Insert the Auger Cable
Feed the tip of the auger cable into the drain opening. If you're working on a sink, you may get better access by removing the P-trap (the curved pipe under the sink) — this also lets you check whether the blockage is in the trap itself. Lock the thumb screw so only 15–20 cm of cable extends beyond the drum.
3. Crank and Advance Slowly
Turn the handle clockwise while gently pushing the cable forward. Clockwise rotation keeps the coil tight and helps it grip debris rather than unravelling. Advance the cable in short increments — release the thumb screw, push forward another 15–20 cm, lock it again, and continue cranking. Never force the cable — if you feel strong resistance, ease back slightly before pushing again.
4. Feel for the Blockage
You'll notice increased resistance when the tip reaches the clog. At this point, continue rotating clockwise with light forward pressure. The auger tip will either hook into the debris (hair, rags) or break it up (soft soap and grease build-up). You may feel the resistance suddenly release — that usually means the blockage has cleared or been snagged.
5. Retrieve the Cable
Once you've worked through the blockage, slowly withdraw the cable while still rotating clockwise. This helps bring debris out with the tip rather than leaving it in the pipe. Have your bucket ready — the cable will come out dirty. Wipe the cable clean with paper towels as you retract it into the drum.
6. Flush the Drain
Run hot water down the drain for 2–3 minutes to flush away any remaining debris and confirm the blockage has cleared. If the water drains freely, you're done. If it's still slow, repeat the process — sometimes a second pass is needed.
7. Clean Up and Disinfect
Dispose of the retrieved debris in the rubbish (not back down the drain). Spray the auger tip and surrounding area with disinfectant. Wash your hands thoroughly.
Common Mistakes to Avoid
- Forcing the cable — this can damage older pipes or cause the cable to kink and snap
- Turning anti-clockwise — this unwinds the coil and reduces effectiveness
- Using an auger after chemical drain cleaner — caustic chemicals can splash back onto your skin when the auger is inserted; always flush with water first
- Ignoring recurring blockages — if the same drain blocks repeatedly, there may be a deeper issue such as root intrusion or a collapsed pipe
Tips for Different Drain Types
| Drain Type | Access Point | Notes |
|---|---|---|
| Bathroom sink | Drain opening or P-trap | Remove pop-up stopper first |
| Shower/bath | Drain grate | Remove grate; hair is the usual culprit |
| Laundry tub | Drain opening | Lint and soap common |
| Kitchen sink | P-trap or drain | Grease build-up; auger + hot flush works well |
When to Call a Professional
Some drain problems are beyond a hand auger — and in New Zealand, certain drain work is restricted to licensed tradespeople. Under the Plumbers, Gasfitters and Drainlayers Board (PGDB) rules, any work on drains beyond the point where they connect to the public sewer or stormwater system must be carried out by a licensed drainlayer. Call a qualified professional if:
- The blockage won't clear after two or three attempts
- Multiple drains in the house are blocked simultaneously (suggests a main drain issue)
- You can hear gurgling from other fixtures when one drain is used
- There is sewage odour inside the house
- The drain has blocked repeatedly over a short period
- You suspect tree root intrusion or a damaged pipe
A licensed drain cleaner or plumber can use a CCTV camera to inspect the pipe and identify the exact cause. You can find qualified local drain cleaners and plumbers on tradedirectory.co.nz.
Master Plumbers
Certifying Plumber
SiteWise
