A Victorian Plumbing expert said: “Toilet cleaner contains high levels of powerful acidic chemicals and using this solution can cause damage to tile grout.
“Instead, use a diluted bleach solution – and don’t forget to wear protective gloves and open a window.”
If you are struggling with more stubborn grout stains, you might want to consider using a strong cleaning product designed for grout.
There are plenty of products designed for grout on the market and in supermarkets.
