How to Unclog a Toilet Quickly: 7 Methods That Actually Work

Post By Admin

May 8, 2026

Did you know that Australian toilets generally come with a 50–75mm trapway? And that means one person doesn’t have to take much toilet paper or debris to cause a blockage.

Hence, knowing how to unclog a toilet quickly and safely matters more than ever. In this guide, we’ll walk you through 7 practical DIY methods you can try and can actually solve most minor clogs. 

One example is if the bowl is rising or close to overflowing, try turning off the isolation valve behind the toilet right away to stop more water entering the bowl. But if the blockage won’t budge, it’s always a good decision to call a professional plumber like us for proper toilet repair service.

What Causes a Clogged Toilet?

To fix it properly, it helps to understand what caused the blockage in the first place. Many toilet blockages come down to one of these common issues:

• So much toilet paper that’s usually found in low-flow toilets. These toilet papers can’t be handled as there isn’t enough pressure to move large amounts through the trap. 
• Non-flushable items such as wipes, sanitary products, and paper towels. Even if it’s marketed as “flushable” wipes, they actually do not break down in sewer systems.
• Foreign objects including kids’ toys, toothbrushes, air fresheners or anything that gets dropped accidentally into the bowl.
• Weak flushing pressure in older cisterns or low-flow toilets that may have difficulty in fully clearing waste through the pipes.

If your toilet is overflowing, turn off the shut-off valve behind the toilet immediately. Don’t flush again until the water level has dropped.

Before You Start, Stop the Overflow First

We recommend you not to flush again if you see the toilet bowl is filling up quickly. Since that second flush can worsen the overflow, try the following steps instead to deal with the blockage without flooding the bathroom.

1. Take out the cistern lid.
2. Push the flapper valve down to stop more water flowing into the bowl.
3. Turn the isolation valve behind the toilet clockwise and wait for it to stop.

7 Easy Ways to Unclog a Toilet

Most of the time, you don’t need to panic or call a plumber. These seven methods on how to unclog a toilet can fix the problem using tools you already have at home.

1. Use a Plunger (Your First Line of Defence)

Plungers work by using suction and pressure to dislodge whatever is blocking the toilet’s trap. A proper seal and strong thrusting motion are key. 

Most people fail because they use the wrong type of plunger or don’t create an airtight seal.

Steps:

• Add water to the bowl if needed. The rubber part of the plunger should be submerged.
• Place it over the drain hole and push down to seal.
• Pump it up and down for 20 to 30 seconds with firm pressure.
• Wait to see if the water drains. If it does, flush once.

The pressure you apply pushes the clog down the pipe or pulls it back slightly, loosening it until it can pass through.

Safety tip: Be sure to protect yourself from toilet water that can splash back unexpectedly by wearing rubber gloves and old clothes before plunging.

2. Hot Water and Dish Soap

This is one of the methods of how to unclog a toilet that combines heat and lubrication to break up soft clogs.

The hot water helps melt and loosen organic waste or fat-based materials, while the soap reduces surface tension and slicks the pipes, helping debris slide through.

Steps:

• Pour ½ cup of dish soap into the bowl and wait 5 minutes.
• Heat a bucket of water (not boiling) and pour it in from waist height.
• Wait 10–15 minutes and flush.

It’s most effective for blockages caused by too much toilet paper or slow-draining clogs. Avoid using boiling water on porcelain toilets: it can cause cracks.

Important Note: Never pour boiling water directly into a toilet bowl because it can crack porcelain. We recommend use hot tap water or boiled water that has cooled for at least 5 minutes (lukewarm). This method usually work best for soft blockages caused by excess toilet paper or waste buildup.

3. Toilet Auger (Closet Auger)

A drain snake or auger is designed to physically reach into the pipe and break up clogs manually. It’s especially useful when the blockage is deeper or lodged past the trap.

Steps:

• Insert the snake slowly into the toilet.
• Rotate the handle to push it through the clog.
• When resistance lessens, pull the snake out.
• Flush to check if the clog is gone.

The auger either breaks the clog into smaller pieces or pulls it back out. It’s more precise than plunging and ideal for recurring issues or compacted blockages.

4. Baking Soda and Vinegar

This natural solution causes a chemical reaction that helps break up the buildup inside the pipes. The fizzing helps shift particles and push them along, while vinegar cuts through minor grime and bacteria.

Steps:

• Pour 1 cup of baking soda into the toilet.
• Add 1–2 cups of vinegar.
• Let it fizz for 20 minutes.
• Add hot water and wait another 10 minutes.
• Flush.

It’s safe for many types of pipes (but beware if you use metal pipes) and is ideal if you want to avoid harsh chemical cleaners. Use this occasionally, even when there’s no clog, as a maintenance routine.

5. Enzyme-Based Drain Cleaner

Enzyme-based drain cleaners use natural bacteria and enzymes to break down organic waste inside the pipes, which makes them safer for older plumbing systems and septic setups. 

They work best for organic buildup like waste and toilet paper.  We don’t recommend you use them for solid objects.

Steps:

1. Read the product label carefully and follow the instructions.
2. Pour the recommended amount into the toilet bowl.
3. Leave it overnight so the enzymes have time to work.
4. Flush the toilet the first thing in the next morning to check if the blockage has cleared.

Additionally, avoid using harsh chemical products or caustic cleaners. If you are wondering why Drano is not recommended for toilets, it’s because strong chemicals can only damage your pipes and add extra problems down the road.

6. Wet/Dry Vacuum

Another method you can try to remove a blockage is wet/dry vacuum. The process may be faster than plunging, especially if a solid object like a toy or toothbrush is stuck inside the trap.

Although, one thing we should remind you is to never use a normal household vacuum cleaner for this job. It must be a wet/dry vacuum designed to handle liquids safely.

Steps:

1. First, you remove as much water from the bowl as possible.
2. Choose wet mode for the vacuum.
3. Put the nozzle over the drain opening.
4. Create a tight seal by using an old rag or towel around the nozzle.
5. Turn the vacuum on for 10–20 seconds.

The suction may pull the blockage out entirely instead of forcing it further into the pipes. Afterwards, be sure to sanitise the hose and vacuum it thoroughly.

7. Call a Professional Plumber

Sometimes, no DIY method will work because the problem isn’t what you think. Professional plumbers bring more than tools because they bring experience and diagnostics.

Professional plumbers use:

• CCTV cameras to inspect your pipes from the inside
• High-pressure jetting to clear large or dense blockages
• Professional-grade augers that can reach deeper into the system

If your toilet keeps clogging, multiple drains are acting up, or you smell sewage, these are signs of a bigger plumbing issue that DIY won’t fix.

Our licensed plumbers at Neighbourhood Plumbing are trained to resolve those issues quickly and thoroughly.

When Should You Call a Plumber?

Even though many people turn to DIY methods to solve minor toilet clogs, there are still some blockages that point to a deeper plumbing issue. This is when you need professional equipment and inspection.

Call a licensed plumber if you notice any of the following strong signs the issue may be beyond the toilet itself: 

• Water backing up into the shower, bathtub, or floor drain after you flush.
• You seem to run into clogged toilet issues every week
• Sewage smells coming from more than one drain in the house.
• The toilet just stays blocked for more than a day. 
• Multiple drains are slow or gurgling at the same time.
• Tree roots or a blocked sewer line.

Since all those signs can involve the main sewer line and you need urgent help, Neighbourhood Plumbing provides fast-response for toilet repair service. Call us right away!

How to Prevent a Clogged Toilet

Fixing a clog is great. Not needing to fix one again is even better. Prevention is easy once you know what to look out for.

• Only flush toilet paper and human waste. Remember that even products labelled “flushable” can clog sewer systems. So, avoid flushing wipes, paper towels, cotton buds, and sanitary products.
• Use less toilet paper per flush. If needed, flush twice instead of forcing too much paper through the trapway at once.
• Have a flange plunger nearby. This tool comes in handy quickly to handle small clogs so that they don’t become major blockages.
• Get a toilet auger for your home. For deeper blockages, the toilet auger can work well without damaging the porcelain bowl.
• Use an enzyme cleaner monthly. This helps reduce organic buildup inside the pipes without using harsh chemicals.
• Educate your family members on what should not go into the toilet. Make sure no one at your house throws small toys or any random objects down the toilet as this habit is one of the most common causes of sudden toilet blockages.

Learn more about how toilet works and what might go wrong behind the scenes.

FAQ about Unclogging a Toilet

Got questions about toilet clogs that just won’t quit? Here are the most common ones we hear — and what you actually need to know to fix or prevent them.

What are the most common ways to unblock a toilet in Australia?

Plunging is the most commonly used method on how to unclog a toilet. Hot water and soap come next. For stubborn clogs, use a snake or auger. For organic build-up, enzyme cleaners are great.

Will a toilet eventually unblock itself?

Sometimes. Soft blockages may dissolve in a few hours. But waiting can make it worse if the water overflows. Best to take action within the first 30 minutes.

Is there anything you can put down a toilet to unclog it?

Yes. Dish soap, hot water, baking soda and vinegar, or enzyme drain cleaners. Never use bleach or chemical openers designed for sinks.

Can I use a plunger if the bowl is full?

Yes, but use caution. Remove some water first with a bucket. Plunge slowly to avoid splashing.

Why does my toilet keep clogging?

Could be a partial clog further down, improper usage, or low flush volume. Persistent clogs usually mean it’s time for a plumbing inspection.

Can unclogging a toilet be done without a plunger?

Yes, with dish soap and hot water, bicarb soda and vinegar, or even a toilet auger! These other alternatives can help clear a clog without a plunger. In some cases, some people have also tried a straightened wire coat hanger that can help break apart shallow blockages carefully.

Are Drano or chemical cleaners safe for my toilet?

No, since most chemical drain cleaners are too harsh for toilet systems and can damage porcelain, seals, and older pipes. What you might get is worsened blockage issues once the chemical sits in standing water. Try safer alternatives like enzyme cleaners or go with manual methods like plunging and augering.

Conclusion

Every homeowner should know how to unclog a toilet.

Start with the basics: plunger, hot water, dish soap. Try drain snakes or natural cleaners if that doesn’t work.

But if your toilet keeps clogging, multiple drains are backing up, or you’re starting to smell sewage, it’s time to stop the DIY attempts. These are clear signs that something deeper in your plumbing system needs professional help.

That’s where we come in. Neighbourhood Plumbing offers a fast, affordable, and expert plumbing service across Melbourne.

Our licensed team is ready to get your toilet and your day back to normal.

Call us now!

About the Author

Ricky Rizz

From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.