Cleaning expert Andy Newton from The Clean Police has shared a simple way to prevent limescale in toilets: drop a denture tablet into the bowl once a week. The acidic ingredients in the tablets help break down the hard-water mineral deposits that bleach and most standard cleaners cannot remove.
Why limescale is hard to remove
Limescale forms wherever water is present, as minerals are left behind when hard water evaporates, gradually building into a stubborn, crusty deposit. It hardens over time and clings to surfaces, while most cleaning products are designed to tackle dirt, grease, or bacteria, not mineral deposits.
Bleach works as a disinfectant but is powerless against limescale. Using it merely whitens the stain while allowing it to grow, and the limescale can harbour bacteria around the porcelain, making the toilet grimier.
How to use denture tablets
Andy explained: "Once a week before you go to bed or when you know your toilet is not going to be used for a while drop a denture tablet down and then flush in the morning or a good few hours after."
For best results, pop one or two tablets into the bowl before bedtime and leave them for six to eight hours. In the morning, a gentle scrub around the waterline should disintegrate the marks without vigorous scrubbing, then flush. Repeat weekly to keep stains at bay.
Safety warning
Acidic products must never be mixed with bleach, as this creates hazardous fumes that pose a serious health risk. If bleach is your usual cleaner, ensure the toilet is completely free of it before using any alternative product.
Denture tablets offer a budget-friendly solution for regular upkeep, but for tougher limescale, stronger acidic solutions like white vinegar or citric acid may be more effective.
