The very bottom of a toilet stains primarily due to hard water mineral deposits (limescale/calcium/magnesium) that start white and darken with trapped dirt, iron/rust from water supply or pipes causing reddish-brown stains, and organic matter/bacteria leading to black, brown, or green spots, often accompanied by a musty smell. Tree roots in old pipes can also introduce staining debris.
Urine scale and limescale leave visible deposits in the toilet. Whereas limescale is a mineral, urine scale contains several mineral salts. The waste in urine contains phosphorus, potassium, sodium, calcium and magnesium. These substances produce brown or yellow stains in the toilet bowl.
To remove brown stains from a toilet bowl, use acidic cleaners like white vinegar, citric acid, or lemon juice, letting them soak for hours or overnight before scrubbing with a brush or pumice stone; adding baking soda creates a fizzing paste for tough spots, while commercial descalers or even strong acids (with extreme caution) can tackle severe hard water/rust buildup.
Black stains in the toilet bowl bottom are usually caused by mold, mildew, or mineral deposits like manganese. To remove them, apply a pumice stone gently to avoid scratching porcelain. Alternatively, use a toilet cleaner with bleach or a vinegar and baking soda mixture.
Sprinkle the contents of two or three packets of baking powder on the areas affected by deposits. Leave the baking powder to work for an hour. Use a brush if necessary. Baking powder is an effective and environmentally friendly way to remove urine stains in toilet bowls.
The 'fizzing' reaction of the baking soda combined with vinegar can also play a part. That fizzing may help to break down the clog into smaller particles, making them easier to flush!
You should never flush wet wipes (even "flushable" ones) and sanitary products (like tampons/pads) because they don't break down, causing serious blockages in pipes and sewage systems. Other items to avoid include paper towels, tissues, cotton buds, dental floss, hair, and cooking oils/fats, as they all contribute to clogs and environmental issues.
Here's how you can do it:
The acid will eat away the lime or mineral deposits and leave the porcelain unaffected. Apply several widths of cellophane like a Saran Wrap kitchen plastic over the toilet bowl to fully cover the toilet bowl and hold the fumes in the toilet and to minimize the hazardous fumes in the bathroom.
Once the bowl is prepped, pour CLR directly into the toilet. If you're dealing with light stains or mineral buildup, about ¼ to ½ cup of CLR should be enough. If you have more serious mineral deposits, you can use up to 1 cup.
The truth is, they're actually super easy to fix! Bleach only masks the problem—it doesn't get rid of it for good. Instead, try citric acid and a toilet pumice stone for a permanent solution.
How to Get Rid of Hard Water Stains in the Toilet
Citric acid
More importantly, it's probably even more effective than vinegar for getting rid of that brown stain in the toilet. Simply pour a kettle of almost boiling water into the bowl, follow up with 250ml of citric acid, and leave it for some hours – preferably overnight. The next day, scrub and flush.
The Causes of Brown Toilet Bowl Stains
Where do these difficult-to-remove stains keep coming from, and why are they so hard to remove? The answer to both of these questions has to do with the contents of your water. The contaminants notorious for causing brown stains in toilet bowls are iron, manganese and sulfur.
Vinegar and Baking Soda Soak Overnight
For tougher stains, you can let vinegar and baking soda work their magic overnight. Pour 1 cup of vinegar into the toilet bowl, then sprinkle 1 cup of baking soda. Close the lid and let it sit overnight. In the morning, scrub and flush for a spotless result.
If the only problem with the toilets is that they have a dull surface, first wipe them with a cloth soaked in warm water with lemon and let it work a little to remove the dirt. Then rinse and wipe with a cloth soaked in hot white vinegar. Rub with a dry, lint-free cloth and you're done!
To remove hard water stains, use a combination of vinegar and baking soda. Sprinkle 1 cup of baking soda around the sides of the toilet bowl and under the rim. Add 1 cup of vinegar to the toilet bowl, let the reaction bubble, and let sit for 15 to 30 minutes.
Baking soda and vinegar, when mixed together, can form a chemical reaction that looks sort of like an eruption. This chemical reaction can help clear your toilet and any pipe clogs that you might have.
In many Amish homes, rags are a common toilet paper alternative. These rags are typically old clothes that have been worn out. After simple processing, they become practical cleaning tools. After use, they are washed clean and can be reused multiple times.
Letting pee sit makes it harder to clean your toilet. This is the best reason I can find for flushing every time you pee. Why? Because the combination of urine and hard water (i.e., water that contains a lot of minerals), if left to sit for a few hours, can create a crusty deposit on the side of the bowl over time.
Plumbers recommend regular cleaning with a good toilet brush and a cleaner (like vinegar/baking soda or commercial products), using pumice stones for tough stains, disinfecting with antibacterial sprays on the exterior, and occasionally deep-cleaning the tank with vinegar, always letting cleaners sit to work, and avoiding mixing chemicals like bleach with other cleaners.
Depending on how bad the stain is, you'll either wait between 2 hours or overnight. Once your waiting time is up, unhook your ball valve and allow it to float - slowly filling up your cistern.
The main difference between rust and limescale is their composition and the way they form. Rust is primarily composed of iron oxide, while limescale is composed of calcium carbonate and other minerals.