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How to Snake a Drain

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Golden-hour view of a person's hands tightening a fitting under a kitchen sink with a wrench

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The short answer: to snake a drain, feed the auger cable into the drain until you feel the clog, lock the cable and crank the handle to work the head through or hook the obstruction, then slowly pull the cable back out — often bringing the clog with it. Run hot water to flush the line clear. Use a handheld drum auger for sinks, tubs, and showers, and a rubber-sleeved closet auger for toilets so you do not scratch the porcelain. Most household clogs sit within the first few feet of the drain.

Snaking beats chemical drain cleaners for solid clogs because it physically removes the blockage instead of trying to dissolve it, and it avoids the pipe damage that repeated chemical use can cause. It is one of the most useful DIY plumbing skills to have.

Which snake for which drain

DrainToolNotes
Bathroom sink, tub, showerHandheld drum auger, ~25 ftClogs are usually hair within a few feet
Kitchen sinkHandheld drum auger, ~25 ftOften grease and food; hot water flush helps after
ToiletCloset (toilet) augerRubber sleeve protects the porcelain
Main line / deep clogPower auger, 50–100 ftRent it or call a plumber

Using the wrong tool causes damage — a plain cable snake in a toilet scratches the bowl, which is why a closet auger has a protective sleeve. For choosing a snake, see our best drain snake picks, and for toilets specifically, best toilet auger.

Overhead view of a person's hands tightening a fitting under a kitchen sink with a wrench, in soft overcast light

Before you snake: try a plunger first

A plunger is faster and gentler, and it clears many clogs on its own. Try it before reaching for the snake.

See how to use a plunger correctly for the technique, and best plunger for the right type. If the plunger fails, move to the snake.

Snaking a sink, tub, or shower

  1. Remove the stopper or drain cover and clear any visible hair from the opening.
  2. Consider removing the P-trap under a sink to snake directly into the wall line, or feed the cable down through the drain if you prefer.
  3. Feed the cable in by hand, turning the drum, until you feel resistance — the clog.
  4. Lock the cable with the setscrew, leaving a few inches exposed, and crank the handle while applying gentle forward pressure to work the head through or hook the clog.
  5. Feel the difference: a soft, gradual give means you are breaking through the clog; a hard stop that will not pass may be a pipe bend — back off, do not force it.
  6. Withdraw the cable slowly, pulling the clog back out with it. Have a bucket and rag ready — it will be messy.
  7. Run hot water to flush the line and confirm it drains freely.
Three-quarter view of a person's hands tightening a fitting under a kitchen sink with a wrench, in soft early-morning light

Snaking a toilet with a closet auger

  1. Position the auger with the curved end in the bowl outlet, cable retracted into the sleeve.
  2. Crank the handle while pushing down gently to feed the cable into the trap, letting the protective sleeve stay against the porcelain.
  3. Work through the clog, then crank in reverse as you pull the cable back to retract it fully.
  4. Flush to test. If it drains, follow with a second flush to confirm.

For toilet-specific detail, see how to unclog a toilet fast.

Technique that protects your pipes

A drain snake can gouge or crack pipes if used aggressively, especially older or corroded lines. Gentle, steady technique keeps it safe.

More on avoiding damage is in can a drain snake damage pipes.

Three-quarter view of a person's hands tightening a fitting under a kitchen sink with a wrench, in warm evening lamplight

After snaking: finish the job

Pulling the clog is not always the whole fix. Residue left on the pipe walls can re-clog quickly.

Types of drain snake, and which to own

There is a range of snakes, and matching the tool to how often you clear clogs saves both money and frustration.

Snake typeReachBest for
Handheld drum auger15–25 ftThe everyday household snake — sinks, tubs, showers
Closet (toilet) auger3–6 ftToilets only; rubber sleeve protects porcelain
Drill-powered auger25–35 ftTougher clogs; the drum chucks into a cordless drill for torque
Flat tape/ribbon snake15–25 ftStraight, small-diameter lines
Sectional/power auger50–100 ftMain lines and root intrusion — usually rented or a pro's tool

For most homeowners, a 25-foot handheld drum auger plus a closet auger covers nearly every clog you will meet. Add a drill-powered version only if you deal with stubborn kitchen clogs regularly. Anything requiring 50 feet or a motorized head is usually the point to rent equipment or call a professional rather than buy.

When to call a plumber

Snaking handles most fixture clogs, but some jobs need a pro. Call one if you have fed the full cable without reaching the clog, if multiple drains back up at once (a main-line blockage), if you snake the same drain repeatedly, or if water backs up into other fixtures when you run one — all signs of a deeper problem like root intrusion or a partial pipe collapse. See how much does a drain snake cost for the DIY-versus-pro math.

How we evaluate drain tools and cleaners — from aggregated owner reviews and expert consensus rather than first-hand testing — is set out in how we rank. For every clog and drain task, the DIY plumbing hub has the full set of guides and picks.

Straight Answers

Frequently Asked

What kind of drain snake do I need?

It depends on the drain. A handheld drum auger with about 25 feet of cable handles most sink, tub, and shower clogs, which sit within the first several feet of the drain. A toilet needs a closet auger (also called a toilet auger), which has a protective rubber sleeve so the cable does not scratch the porcelain. Larger or deeper clogs in the main line may need a longer power auger, often best rented or left to a plumber. For most household clogs, an inexpensive 25-foot handheld snake is all you need.

Can a drain snake damage my pipes?

It can if used carelessly, but gentle technique makes it safe for most pipes. Forcing the cable hard, especially in older or corroded pipes or delicate materials, can scratch, gouge, or crack them, and a toilet needs a rubber-sleeved closet auger specifically to avoid scratching the porcelain. Feed the cable steadily rather than jamming it, let the auger head do the work, and never crank against heavy resistance. If the cable will not pass a bend, back off rather than forcing it through.

What is the difference between snaking and using a drain cleaner?

A drain snake physically breaks up or pulls out the clog, while chemical drain cleaners try to dissolve it. Snaking is more reliable for solid clogs like hair and debris and does not risk the pipe damage that repeated chemical use can cause. Chemical cleaners can also be hazardous and are often ineffective on a full blockage, sitting on top of standing water. Many plumbers recommend mechanical clearing (snake or plunger) over chemicals for most household clogs, reserving enzyme cleaners for maintenance.

How far should I push the snake in?

Feed it until you feel resistance, which is the clog, usually within the first several feet for a sink, tub, or shower since most clogs form close to the fixture. Once you reach the obstruction, work the auger through it rather than pushing past it. If you have fed the entire cable, typically 25 feet, without hitting anything, the clog may be deeper in the line or in the main drain, which usually calls for a longer auger or a plumber. Do not keep forcing a fully extended cable.

The drain is still slow after snaking. What now?

If it drains but slowly, some residue remains, so follow the snaking with a flush of hot water and, for grease or soap buildup, an enzyme drain cleaner to clear the film the snake left behind. If it is still fully clogged, the clog may be deeper than your snake reached, in a vent, or in the main line, and it is time for a longer auger or a professional. Repeated clogs in the same drain can signal a deeper problem like a partial pipe collapse or root intrusion worth investigating.