Dirty grout can seem so hard to restore to its original colour that many of us reach for strong cleaning products.

That includes the strongest of them all – bleach , because of its powerful and almost instant ability to change the colour of anything.

But it's one of two products Bryony Conlan, Business Development Manager at The Grout Guy gets frustrated seeing people use.

"Bleach is a really heavy product, and while some people love the smell of it, it does deteriorate your grout," she tells nine.com.au.

The other product she can't stand people using is white vinegar , which many say works wonders for shower glass but it isn't recommended for grout.

"Vinegar is the bane of my existence when it comes to cleaning. People love it because it's acidic, but what

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