$5 supermarket buy easily cleans black toilet bowl stains
Tired of stubborn toilet stains that just won’t budge? You’re not alone; thousands of Aussies are searching for how to clean a stained toilet bowl.
One mum’s viral $3 cleaning hack is changing the game with a pantry item you probably already own: citric acid.
KEY TAKEAWAYS
- Toilet bowl stains are usually caused by limescale, mineral deposits, rust or mould — and can be removed without harsh chemicals
- Citric acid is one of the most effective and affordable solutions, with a 150g container costing just $5 at Woolworths
- For a deep clean, add 125g of citric acid to the bowl after pouring in a bucket of hot water and leave it to soak overnight before scrubbing If you don’t have citric acid, alternatives like vinegar, baking soda, Scalex or even Coca-Cola can also help shift stubborn stains
- Never mix vinegar and baking soda together as they cancel each other out — use them separately for best results
Why toilet bowl stains happen
- Limescale and mineral deposits: Especially in hard water areas
- Rust: Caused by old pipes or iron in your water supply
- Mould and mildew: Common in toilets that are used less frequently
The good news? These are all fixable without harsh chemicals.
How to use citric acid to remove toilet bowl stains
“To the woman who suggested I use citric acid to clean the black from my toilet bowl. I LOVE YOU… One small can of citric acid moved that muck with just an overnight soak and a scrub.”
At the time of publishing, a 150g container of McKenzie’s Citric Acid costs $5 at Woolworths, making it an efficient and cost-effective way to clean your toilet.
Using citric acid to clean stains from a toilet can save time and money.
After reading this post, many other mums said they were excited to try this at home.
“I literally cannot wait to try this,” said one commenter. “I joined this group to try and deal with this exact problem.. black stuff on the bottom of my toilets that I can’t budge!!”
Another said, “Wow, thank you for sharing. I have issues with harsh chemicals and can’t use them as they bring on an asthma attack. This is great.”
Here’s how to do it:
- Quick clean: Pour 1-3 tablespoons of citric acid into the toilet bowl, swirl it with a toilet brush and let it sit for 15-20 minutes. Scrub and flush.
- Deep clean: Pour a bucket of hot water into the toilet first, then add 125g citric acid. Let it sit for a few hours or overnight. Scrub and flush.
Always wear gloves when handling citric acid, as it can irritate the skin.
Other ways to clean a stained toilet bowl
If you don’t have citric acid handy, try one of these alternatives:
- Scalex: A heavy-duty descaler that targets calcium, lime and rust. Pour the mixture into the bowl and let it sit overnight.
- Vinegar and baking soda (separately): These are great natural cleaners, but don’t mix them! Use vinegar for soaking, or sprinkle baking soda before scrubbing.
- Coca-Cola: Surprisingly effective. Pour a can into the bowl, let sit overnight, then scrub.
- Pumice stone: For extreme buildup on porcelain only—never use on plastic or enamel.
How to remove brown, grey, and yellow toilet stains
- Brown stains: Often caused by hard water and rust. Try citric acid or Scalex.
- Grey stains: Typically caused by mould or mineral buildup. Use vinegar or bleach (never together).
- Yellow streaks: Usually, urine scale or mineral staining. Citric acid and vinegar work best.
Can you mix baking soda and vinegar in the toilet?
“They will become useless as a cleaning agent. The bubbles don’t mean cleaning power. What’s left is mostly water and sodium acetate.”
Instead, use them one at a time. For example, soak in vinegar first, then scrub with baking soda after.
How to prevent stains from coming back
- Clean regularly with a toilet brush and vinegar.
- Use a descaler monthly if you have hard water.
- Flush regularly in low-use bathrooms.
- Keep the bathroom ventilated to prevent mould.
