We have lots of calcuim in the Zug water and when my loo was broken and dripping (inside) we got a hard water stripe down the back. I tried everything and the durgol heavy duty stuff was the only thing that worked. Now that i'm pregnant again the loo is in use all night, so I need to use the other loo and try the leaving the coke again overnight.

I wish I knew a non-chemical way of cleaning the oven. Oven cleaner stinks and I don't want to use it now. Anyone know?