How to Get Rid of Black Stain in Toilet Bowl?

The presence of black stains in the toilet bowl may seem harmless at first sight. However, it can cause respiratory issues for people. Because mold spores generate the black spots, small spores are released into the air.

If you’re looking for answers to “how to get rid of black stain in toilet bowl’’ you’ve come to the right place.

Flush the toilet and cut off its access to water. Now that the bowl is empty, sprinkle baking soda over the black stains and use a brush to scrub it. Then, pour white vinegar over the scrubbed stains and baking soda. Permit the solution to sit for approximately 30 minutes before rinsing the bowl.

There are several methods for removing black stains from the toilet bowl. So let’s get started!

Table of Contents

What is the Source of Black Stains in the Toilet Bowl?

Black Stains in toilet bowls are caused by a variety of factors like bacteria, hard water, and mold. 

Serratia marcescens is a species of bacteria. It thrives in wet and gloomy environments, such as toilet bowls. If left untreated, it will leave a sort of pinkish circle in your toilet. 

This bacteria is toxic for humans. It also exhibits drug resistance, which can make infection treatment challenging. Bacteria should be eradicated as soon as they are discovered to avoid any potential harm.

Hard water contains microscopic minerals that can accumulate in locations with high flow rates. These minerals show in your toilet bowl as black lines. It mostly happens when the stream is heaviest. 

One of these minerals is manganese. The presence of little manganese stains in your water is not that alarming. At high concentrations, though, it can have an effect on the quality of water.

While there is no imminent risk to one’s health, it is best to eliminate mineral deposits as soon as possible to avoid a greater buildup.

Mold spores are fungi that thrive in dark, moist settings. And the bottom of the toilet bowl is a prime illustration. These are the kinds of microorganisms that can be harmful if inhaled.

The rings are usually in black color, but they may also appear in other colors. Mold should be removed asap as it is discovered to minimize it from spreading.

There are many methods for getting rid of mold and mildew.

8 Methods to Remove Black Stains from a Toilet Bowl

How to Get Rid of Black Stain in Toilet Bowl

We’ll go over eight different ways to get rid of black spots in the toilet bowl. Each approach is distinct in its own way, yet they are all incredibly successful at cleaning. We’ll go over eight different ways to get rid of dark marks in the toilet bowl. Each approach is distinct in its own way, yet they are all incredibly successful at cleaning.

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Method # 1 Tartar and 3% Hydrogen Peroxide

Tartar and Hydrogen Peroxide

The first method that we mention requires Tartar cream and 3 percent Hydrogen Peroxide. These products are completely safe to use as cleaning agents.

Necessary Components

  • 3 % Hydrogen Peroxide
  • Tartar
  • Brush

Here are some recommendations for the best brush for toilet cleaning you can take a look at

Product 1- OXO Good Grips Hideaway.Marbarsse Bathroom Toilet Bowl Brush.
Product 2- MR.SIGA Toilet Plunger and Bowl Brush.BOOMJOY Toilet Brush.

These are some good quality brushes. You can check them out.


  1. Decrease the water content in the toilet until you can access the black stains in the toilet bowl. You can do so by turning off the toilet’s access to water and flushing the toilet to remove excess water.
  1. Combine cream of tartar and 3% hydrogen peroxide. Then, gradually add peroxide to the solution, stirring constantly, until it forms a paste.
  1. Now, take some of that paste and put it on the brush.
  1. Now apply the paste on the black spots and around them using the brush. Then leave it for at least 30 minutes. 
  1. After 15 mins have passed, wash the paste away with water. 

Method # 2 Distilled Vinegar and Borax

Distilled Vinegar and Borax

You’re probably familiar with both Borax and Distilled Vinegar. But you may be wondering why our second method demands the use of both. Vinegar is commonly used in cooking and preserving food. It can erase some difficult stains and that’s why it will be used with Borax.

Necessary Components

  • Distilled Vinegar
  • Borax
  • Spray Bottles


  1. Firstly start off the cleaning process by flushing your toilet.
  1. Now, while the black stain is still wet, apply borax on the black stain.
  1. After that, load a spray container full of distilled white vinegar.
  1. The vinegar should next be sprayed onto the black stains.

Added Advice: Avoid using the toilet during this time.

Method # 3 Cleaning Tablets and Vinegar

Cleaning Tablets and Vinegar

This method is highly unorthodox and not used much when cleaning toilets. However, it’s highly effective and we suggest you give it a try. 

Necessary Components

  • Cleaning Tablets
  • Vinegar
  • Cup
  • Cleaning Brush


  1. Toss some cleaning tablets into the toilet and leave it for 20-30 minutes.
  1. After the tablets have broken down, scrub the toilet bowl with a brush.
  1. Then, splatter heated vinegar on the bowl’s sides. You’ll notice it working its way down to the bottom of the toilet.
  1. Now, allow the vinegar to sit for another 30 mins. Following it, scrub the toilet bowl again.
  1. Check for substantial accumulation in your toilet after flushing it. If any residue remains, repeat the cleaning procedure.
  1. But this time around, use twice the number of cleaning tablets and vinegar. Then let the two sit for an hour before scrubbing again with the brush.
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Method # 4 White Vinegar and Baking Soda

White Vinegar and Baking Soda

Yeah, this time we are suggesting not one but two cooking items. 

Necessary Components

  • Baking Soda
  • White Vinegar


  1. Rinse the black stains in the toilet bowl.
  1. Then, on top of the black streaks, add baking soda. Spread the soda all over with a brush scrape.
  1. After that, apply white vinegar to the discolored area. Wait 30 minutes for the baking soda and white vinegar to settle.
  1. Then rinse the entire toilet. 
  1. You will notice that the black stains have started to disappear. However, if you aren’t satisfied, repeat the process.

Method # 5 Coca-Cola

Coca Cola

Coca-Cola is a nice drink to enjoy after a hard day of work. However, it can also act as a cleaning agent and remove some tough stains.

Necessary Components

  • Coca-Cola (or other similar carbonated drink)
  • Toilet Brush


  1. Firstly flush your toilet to decrease any excess water content in the bowl. Then, shut off the water access to keep it from filling up.
  1. Now that the toilet bowl is empty, fill it up with a few liters of Coca-Cola.
  1. Let the Cola sit overnight and don’t do anything. This will allow the acids in the cola to work their magic. 
  1. After the cola has sat for a whole night, flush it away and use a brush to clean away any remnants.

Method # 6 Borax Paste

Borax Paste

Borax is commonly used as a household cleaner and comes in liquid form. However, it can simply be converted into a paste to eliminate tough stains.

How to Create Borax Paste

How to Create Borax Paste

Creating a borax paste is not difficult at all. You only need a handful of ingredients. You’ll find all of these in your pantry or kitchen.

Necessary Components
  • Borax
  • Lemon Juice
  1. Mix 1 cup Borax with ¼ cup of lemon juice.  
  1. Then, begin blending the borax and lemon juice combination until a paste develops.

Now, you can store the paste and use it to get rid of the toughest stains you can find.

How to Clean Using Borax Paste

How to Clean Using Borax Paste

We’ve covered how to make Borax paste-up until now. Let’s have a look at how to clean with it now-

  1. Turn off the water to your toilet and flush it once. It will let all of the water drain out of the bowl.
  1. Rub the borax evenly over the stains in your toilet bowl to completely cover them. Keep in mind that the paste will harden quickly. Therefore, don’t start this step until you’re ready.
  1. Allow the paste up to 20 minutes to rest on the spots.
  2. Permit the paste to remain for a few minutes before scrubbing the spots away.
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Method # 7 Automatic Toilet Bowl Cleaner

Automatic Toilet Bowl Cleaner

Iron Out is a commercially available bowl cleaner. Its purpose is to clean rust stains. However, it can remove black stains in the toilet bowl just as easily. It’s effective against both Iron and Manganese. And these two chemicals are responsible for the formation of black stains. 


  1. Firstly clean out the toilet bowl. 
  1. Then flush the toilet. Before it fills up, drop a tablet into the back corner of the tank. Make sure to drop it away from the valve.
  1. Now, wait 15 mins before flushing again. 
  1. Replace the tablet every 45 days.

Method # 8 Scrubbing with Sandpaper


Yes, you read it right. We want you to scrub your toilet bowl with sandpaper. If you don’t want to damage the porcelain then use 0000-grade steel wool.


  1. Take a ball of 0000-grade steel wool and put some cleaner on it. 
  1. Then start scrubbing at the black stains with it. 

Following this method will help to remove the toughest stains.

The 8 methods that we’ve talked about until now have been tested by us. You can even follow these methods to remove copper stains from the toilet bowl.


How can you remove black stains from a porcelain toilet?

Use an acid-based cleanser or a gentle abrasive to remove black spots from porcelain toilets. You could also lightly buff these away with a pumice stone.

How do I correct the whiteness of my toilet bowl?

Add 2 parts borax and 1 part lemon juice to your toilet bowl to clean it. Smear the paste over any remaining areas in the dish with your fingertips. While lemon juice whitens, borax cleans. Permit the paste to soak for 2 hours in the bowl to brighten and lighten stains.

How can I get metal stains out of porcelain?

An acid, such as lemon juice or white vinegar, can be used to erase metal scratches. Apply your preferred acid to the affected region and leave it to sit for a few minutes. Instead of scrubbing, keep an eye on the color shift.

Can I use a magic eraser on porcelain?

Yes. On porcelain, you can use a magic eraser. It quickly removes those tenacious streaks. As a result, it quickly returns your bath, shower, or tub to like-new condition.


We hope that the article on “how to get rid of black stain in toilet bowl” has answered most of your queries. We tried to put forth the solutions as simply as we could.

Do let us know in the comment section if you have any further queries.

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