[Advice] Removing Limescale from a Toilet Bowl
Here's a little tip I came across just the other day.
If your toilet has a layer of limescale from years of neglect (I experienced this in a rented property), you can buy expensive chemical solutions that may or may not work to remove it. Before you try this, though, I suggest you purchase some denture cleaning product and give that a whirl.
It usually comes in tablets that fizz in water, designed to be dropped into a glass with dentures overnight. My sister-in-law recommended the trick to me, and I have to say it did the job. Simply drop a couple of tablets in the bowl and leave it for a few hours (overnight is fine). It will eat away at the nasty limescale and weaken what remains to help you scrub it away with far less hassle. I repeated it three or four times and got results.
This stuff is what I used, and it often works out cheaper than the limescale removers you can buy.