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My house has old Edwardian cast iron gutters and down pipes that are quite rusty, what can I do to protect them from further deterioration?  (J Whelan Glasnevin)Remove all debris and clean them as bes..

I would be grateful if you know of a remedy for rust stains on the stone (or concrete) slabs on my patio. I tried a patio cleaner bought from a supermarket, also bleach. Both have helped a litt le but..