Toilets often get yellow or brown stains due to limescale, which is resistant to many common cleaning agents and can be tricky to scrub if you do not have the right products. 

Limescale is made of calcium carbonate, a crystalline substance that forms when hard water evaporates. It will stick strongly to surfaces to form a crusty layer which is difficult to scrub away. 

It may be tempting to pour a bottle of bleach down the toilet bowl to remove limescale but not only is this ineffective, it will damage the surface of a toilet and can cause yellow stains. 

However, Lynsey Crombie, Britain’s most popular cleaner who also goes by the Queen of Clean, has shared that the best way to remove toilet limescale is both simple and natural. 

Lynsey said: “Citric Acid is your go-to and will remove those pesky marks.” 

Citric acid is the crystallised version of the acid naturally found in lemons, oranges and limes which is known to break down calcium carbonate. 

It is much safer to use than many harsh chemical cleaners and will not damage the toilet surface, plus it’s incredibly cheap to buy in most supermarkets. 

It costs £2 at Tesco, ASDA and Sainsbury while costing £2.35 at Morrisons.   

In a video online, Lynsey explained that her friend was having trouble cleaning a toilet so she showed her how easy it is to remove limescale with citric acid. 

Lynsey said: “A friend of mine has a bit of a toilet situation, she has got those brown unsightly marks in her loo. 

“She’s tried loads of different products, so I’ve brought with me a box of citric acid, so I can show her how to get it off.”

To get rid of limescale, all you need is a box of citric acid, some strong kitchen roll and a pair of rubber gloves. 

According to Lysney, all you need to do is take a damp a piece of kitchen roll and a sprinkle a generous amount of citric acid on the it. 

Then simply put some gloves on and stick the paper roll on the toilet stain, with the citric acid facing down on the mark. 

Lynsey waited for an hour to see if the toilet limescale was gone but she said that ideally, you should leave the citric acid on the surface overnight. 

She said: “Two brown lines were going down, and now those brown lines are gone! Obviously, the longer you leave it the better but what a transformation!” 

In the comment section, Lysney said this solution will also work on the rim of the toilet. She added that to get rid of any toilet bowl stains, all you have to do is pour the citric acid crystals into it, leave it overnight and it will be sparkling clean the next day.