The short answer
Start with a plunger; reach for a snake if the plunger fails. A plunger clears a blockage with suction and pressure waves through the water — it is cheap, quick and ideal for a soft, nearby clog in a sink, basin, toilet or shower. A drain snake (also called a plumber's auger) is a long flexible coil you feed down the pipe and rotate to hook, break up or pull out a blockage that is further down or too firm to plunge, such as a compacted hair clog or a stubborn obstruction past the trap. Use a cup plunger for flat sink and bath outlets and a flange plunger for toilets. If two or three good plunges do not clear it, a snake reaches deeper and grips what suction alone cannot move.
A plunger and a drain snake are the two basic mechanical tools every UK household can use before calling anyone out. They suit different blockages and different depths. Here is how to choose between them.
Plunger vs snake
- PlungerSuction and pressure
- Snake/augerFlexible rotating coil
- Plunger reachSurface/trap area
- Snake reachSeveral metres down the pipe
- Try firstPlunger, then snake
How each tool works
A plunger seals over the plughole or toilet outlet and uses water as the working medium. As you push and pull, you create alternating pressure and suction that shifts a soft blockage back and forth until it breaks free or is drawn back toward you. It needs a good seal and enough water in the fixture to transmit the force, which is why it works best on a clog close to the outlet. A cup plunger suits flat surfaces like sinks and baths; a flange plunger has a soft extension that seats into a toilet's curved outlet for a proper seal.
A drain snake is a coiled metal cable, hand-cranked or fitted to a drill, with a head that hooks or augers into the blockage. You feed it down the pipe until it meets resistance, then rotate it to grab hair, break up a soft mass, or push through a firmer obstruction. Because the cable is several metres long, it reaches blockages well beyond the trap that a plunger cannot affect.
| Factor | Plunger | Drain snake / auger |
|---|---|---|
| Action | Suction and pressure | Rotating, hooking, boring |
| Reach | Outlet and trap area | Several metres into pipe |
| Best for | Soft, nearby clog | Hair, deeper or firmer blockage |
| Toilets | Flange plunger | Toilet auger (closet auger) |
| Cost | ~£5–£15 | ~£10–£30 hand snake |
| Skill | Very easy | Some technique needed |
| Mess risk | Splashback | Pulls debris back out |
Indicative comparison for guidance. Tool prices vary by size and type.
Choosing for the fixture and the blockage
For a slow or blocked sink, basin or bath, try a cup plunger first: block any overflow with a damp cloth so the pressure goes down the pipe, run enough water to cover the plunger cup, and plunge firmly a dozen times. For a toilet, use a flange plunger and a steady push-pull rather than violent thrusts that splash. Most everyday soft clogs — a slug of food waste, a soap and hair mass near the trap, toilet paper build-up — respond to plunging alone.
If plunging fails, the blockage is likely firmer or deeper, and a snake earns its place. Hair clogs in shower and bath wastes often need the hooking action of an auger to pull the mass out rather than just push it. For toilets, a closet auger has a protective sleeve so the cable does not scratch the porcelain. Feed gently, let the head do the work, and withdraw slowly so you draw the debris back out rather than packing it tighter.
Limits, hygiene and when to stop
Both tools clear local blockages but neither will fix a problem in the underground drain run between chambers, a collapsed pipe, or root ingress — those need rodding, jetting or a CCTV survey. A snake can also push a soft blockage further along instead of removing it, and forcing it can scratch porcelain or, on old pipework, disturb joints. If two or three honest attempts with the right tool do not clear it, or if several fittings are slow at once, the cause is further down the system and worth investigating rather than forcing.
On hygiene, drain water carries bacteria. Wear gloves, avoid splashing your face, and disinfect the tools and surrounding surfaces afterwards. A snake in particular pulls contaminated debris back out, so have a bag or bucket ready and wash thoroughly when you are done. Keep a dedicated plunger and, if you buy one, a drain snake in the house — between them they clear the large majority of everyday household blockages without a call-out.
Cost, buying and which to own
Both tools are inexpensive and worth keeping at home. A basic cup or flange plunger costs little and lasts for years, and a hand-cranked drain snake of a few metres is also modestly priced, so for the cost of a single call-out you can own both and handle most household clogs yourself. If you buy just one item, a good plunger covers the widest range of everyday problems; add a hand snake if you have a household prone to hair blockages in showers and baths, where the snake's hooking action is genuinely useful.
When choosing a snake, length and head type matter. A short hand snake of three to five metres suits sinks, basins and showers; a closet auger is the right tool for toilets because of its porcelain-protecting sleeve and shorter, curved guide. Avoid feeding a standard snake into a WC, where it can scratch the bowl, and do not use a drill-driven snake without understanding how the cable can kink or whip. For a plunger, having both a flat cup type for sinks and baths and a flanged type for the toilet covers every fixture properly.
It is also worth knowing when a slightly different tool helps. A flexible plastic drain-cleaning strip with barbs is cheap and surprisingly effective at pulling hair out of a shower or basin waste near the trap, often clearing a clog a plunger cannot grip without needing a full snake at all. For a sink, removing and cleaning the trap by hand is sometimes the quickest fix of all, since the U-bend is where food, fat and debris most often collect. Matching the simplest adequate tool to the fixture saves effort and avoids reaching for chemicals unnecessarily.
Frequently asked questions
Can a plunger make a blockage worse?
Rarely, but it can. If the seal is poor or the blockage is a solid object, vigorous plunging mostly just splashes. On a toilet, over-forceful plunging can push a hard object further toward the outlet. If a few firm, well-sealed plunges do not work, switch to a snake rather than plunging harder.
Will a drain snake scratch my toilet?
A standard drain snake can scratch porcelain, which is why a closet (toilet) auger has a plastic or rubber sleeve to protect the bowl. Use the toilet-specific tool for WCs and feed it gently rather than forcing the cable against the surface.
What if neither the plunger nor the snake works?
If both fail, the blockage is likely deeper in the system, a solid object, roots or a collapse that hand tools cannot reach. Check whether more than one fitting is affected — if so the problem is in the shared or underground run, which calls for rodding, jetting or a CCTV survey by a drainage professional.
Sources & further reading
Figures on this page are typical UK ranges drawn from published cost guides and are intended as guidance, not a quotation.