How to Unclog a Toilet: The Complete Guide (Plunger, Auger, and Without Either)

A clogged toilet is one of those small emergencies where the right technique matters more than the right tool. Most people grab a flat-cup plunger (the kind that comes free with a house), push it up and down a few times with no real seal, and conclude the clog needs a plumber. It almost certainly doesn't. The bell-shaped flange plunger purpose-built for toilets, used correctly, clears 95% of clogs in under five minutes. The other 5% need a $15 closet auger.

Below: how to know which tool you need, how to use each one correctly, what to do if you don't have either, when to stop trying and call a plumber, and how to avoid the next clog.

First: figure out what kind of clog you have

Before you do anything, do not flush again. The single most common mistake is the panic-flush — water rises, the flapper hasn't reset, you flush again, and now you have an overflow on the bathroom floor. Step one in any toilet clog is to remove the tank lid and manually close the flapper (push it back down onto its seat). That stops more water from entering the bowl regardless of what you do next.

With the immediate panic handled, figure out which of three clog scenarios you have:

• Soft clog (most common ~80%). Toilet paper plus organic matter has accumulated in the trap. Water drains slowly when you stop the flush mid-cycle. A plunger clears this in 30 seconds with proper technique.
• Object clog (~15%). A specific item — a toy, a baby wipe, dental floss, a feminine product, a toothbrush — is lodged in the trap. The plunger can sometimes push it through, but more often the auger is needed to either grab and pull it back or push it through into the larger drain line.
• Drain-line clog deeper in the system (~5%). The problem isn't in the toilet at all — it's further down the line. The tell: other fixtures in the same bathroom (shower, sink) are also slow or backing up. This needs a plumber's drain machine, not a toilet plunger.

Get the right plunger

The flat-cup plunger that comes free with most rental properties is designed for sinks. It seals against a flat surface. A toilet drain isn't flat — it's a vertical opening at the bottom of a curved bowl. The right tool is a flange plunger (also called a bell or accordion plunger), with an extra rubber flange that extends below the main cup and fits into the toilet drain. A good flange plunger costs $8–$15 at any hardware store and is the single most important toilet tool to own.

If you only have a flat-cup plunger, you can sometimes make it work by folding the cup edge to create a partial seal, but the success rate drops dramatically. If you'll have a clogged toilet more than once a year, just buy a flange plunger.

How to plunge correctly

Most failed plunging attempts are technique problems, not tool problems. The correct procedure:

1. Make sure there's water in the bowl. The plunger works on water pressure; air doesn't transmit force the same way. If the bowl is dry (because someone already tried unclogging and bailed water), add water from a pitcher until the bowl is about half-full. You want enough water to fully cover the plunger head when it's seated.
2. Seat the plunger. Lower the flange into the drain opening at an angle, letting the cup fill with water as it goes in. Plunging an air-filled cup wastes the first 2–3 strokes; a water-filled cup transmits pressure immediately.
3. Form a tight seal. Press the plunger straight down so the rim of the cup sits flush against the porcelain around the drain opening. This is the seal that makes everything else work.
4. Start with a gentle first push. The first stroke just compresses air still trapped under the cup; you want to push it out without lifting the cup off its seal. A slow, firm initial push.
5. Then plunge with steady, forceful strokes. Push down and pull up rhythmically, 10–15 strokes. The key is the pull-up — you're alternating between pushing water down (positive pressure on the clog) and pulling water back (negative pressure that breaks up the clog from the other direction). Both directions matter.
6. Listen for the gurgle. When the clog clears, you'll hear water suddenly rush down the drain. The water level in the bowl will drop noticeably.
7. Test with a single flush. If water drains normally, you're done. If it's still slow, repeat the plunging for another 10–15 strokes. If after 30 strokes nothing has changed, the plunger isn't going to clear it — move to the auger.

Common technique mistakes: lifting the cup too high (breaks the seal), plunging too gently (doesn't generate enough pressure differential), giving up after 5 strokes (the clog often clears on stroke 8 or 10), or trying to plunge a bowl that's already overflowing (the seal fails because there's no air pocket above the water).

How to use a closet auger

If 30 strokes of plunging didn't clear the clog, you need a closet auger. These are different from regular drain snakes — they're specifically designed to navigate a toilet's curved trap without scratching the porcelain. A typical closet auger has a rubber sleeve at the bottom that protects the bowl, a 3-foot flexible cable with an auger head, and a hand crank at the top.

Cost: $15–$30 at any hardware store. The Cobra 00300 and the Ridgid K-3 are the two most common consumer models. Both work.

1. Pull the auger cable fully into the housing before inserting it into the toilet. The cable comes pre-extended out of the box, and inserting it that way scratches the porcelain.
2. Place the rubber-sleeved end into the toilet drain opening. The sleeve protects the bowl from scratches.
3. Crank the handle clockwise while gently pushing the cable down into the trap. The cable will navigate the curve. Resistance means you've hit something — the clog itself, or a bend in the trap.
4. When you hit resistance, work the cable back and forth a few times while continuing to crank. The auger head will either grab the object (if it's a hard object), break up the soft material, or push it through into the larger drain line.
5. Pull the cable back out by reversing the crank direction. If you've grabbed an object, you'll feel the resistance as you pull. The object often comes back with the auger head — be ready with a bucket or trash bag.
6. Flush to test. If water drains normally, you're done. If it's still clogged, the object may have moved further down the line — try the auger again, or call a plumber.

If you don't have a plunger or auger

For the late-night clog with no tools available, household items can sometimes clear soft clogs:

Hot water and dish soap

Squirt a generous amount (1/4 cup) of dish soap into the bowl. Let it sit for 10–15 minutes — the soap acts as a lubricant and helps break up organic matter. Then pour 1 gallon of hot (not boiling — boiling water can crack porcelain) water from waist height into the bowl. The combination of soap, lubrication, and the kinetic energy from the pour clears many soft clogs.

Don't pour boiling water. The thermal shock can crack a cold porcelain bowl, which turns a $5 problem into a $200+ toilet replacement.

Baking soda and vinegar

Pour 1 cup of baking soda into the bowl. Follow with 2 cups of white vinegar. The reaction creates fizz and pressure that can break up soft clogs. Let it sit for 30 minutes, then pour 1 gallon of hot water on top. This works for organic-matter clogs but not for object clogs.

The wire coat hanger

For object clogs where you can see or feel an object stuck just inside the drain opening, an unwound wire coat hanger can sometimes retrieve it. Wrap the end with a cloth to protect the porcelain, hook the wire into the drain, and try to grab or push the object. This is genuinely a last resort — it's easy to scratch the bowl, and it doesn't work well for anything past the first inch or two of the trap.

When NOT to try to unclog it yourself

Stop and call a plumber if:

• Multiple fixtures are slow or backing up. The clog isn't in the toilet — it's in the main drain line. Plunging the toilet does nothing for this. You need a drain machine to clear the main line.
• The toilet has been clogged for days and you've tried multiple methods. At some point, the time spent troubleshooting exceeds the cost of a plumber.
• You suspect a hard object is lodged in the trap and you can't retrieve it with an auger. Continuing to plunge can push it deeper into the drain line, making it more expensive to retrieve later.
• Water is backing up from other drains when you plunge — that's a main-line clog or sewer issue.
• The toilet has a visible crack in the bowl. Pressure from plunging can worsen the crack.

When the toilet itself is the problem

Some toilets — particularly the early generation of low-flow models from the 1990s and very cheap modern toilets — are simply prone to clogging. They lack the flush power to clear normal use. If your toilet clogs more than once a month and the clogs are always at the toilet (not the line), the toilet itself is the problem. Modern WaterSense toilets (the TOTO Drake, the Kohler Cimarron, the American Standard Champion) push 1,000+ grams of waste per flush with 1.28 GPF, vs. the 200–400 grams of an underperforming budget toilet.

If clogging is a regular event, see our best toilets list — modern models with high MaP scores (Maximum Performance, measuring flush capacity in grams) have largely eliminated the constant-clog problem.

Preventing the next clog

• Don't flush anything that isn't human waste or toilet paper. The list of "flushable" items that aren't actually flushable is long: baby wipes (even "flushable" ones), feminine products, dental floss, paper towels, cotton balls, makeup wipes, hair, and pretty much anything else. Most chronic clog issues trace back to one or more of these.
• Use less toilet paper per flush. If your toilet clogs on normal use, switch to a thinner toilet paper or flush in the middle of bigger uses. This sounds trivial; it's the single highest-impact change for clog-prone toilets.
• If you have an old toilet that clogs regularly, replace it. The math works fast: a single plumber call to clear a clog costs $150–$300. A new high-MaP-score toilet costs $200–$400. After two clogs, you're break-even.
• Keep a flange plunger in every bathroom, and a closet auger somewhere accessible. The 90 seconds saved finding tools makes the difference between a five-minute fix and a half-hour disaster.

What it costs

DIY: $0 (if you have a flange plunger) to $30 (flange plunger plus closet auger). Time: 5 minutes for the plunger fix, 15–20 minutes if the auger is needed.

Professional plumber: $150–$300 for a basic toilet clog clear during normal hours. After-hours emergency: $250–$500. If they need to run a drain machine for a deeper clog: $300–$600.

For anything that's clearly a toilet-trap clog (not a main-line issue), DIY is overwhelmingly the right call. The tools are inexpensive and the technique is learnable in one try.