This what I've been using, works too. Got it from The Reject Shop.

Note that bleach just turns the mould white, it doesn't actually kill it!

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slammin said..
Clove oil mixed with a few drops of detergent and vinegar is a mouldicide that lasts after you cleaned..

Great recipe, I've been using it for years in the shower.

This is the inside of the hurricane went from the inside on the ceiling which has a liner.

We used "Wet and Forget" diluted (on our ensuite sealing) and in over 12 months ago and no there is more signs of mould returning.
Put I litre into 5 litre of water and spray on the mould.
I understand this product used to keep historic sandstone buildings clean.
We use on pavers instead of our hours with our Gernie.