In message , Barb
writes
Hi, I've got some horrendous rust stains on flagstones, from old cast iron
pation furniture.

What's the best way of cleaning these? Can it be done? I've tried all
sorts of the usual things and nothing really seems to work ...

Thanks.

Barb


What are the flagstones made of? Anything that will dissolve rust is
liable to make a mess of limestone; some other rocks are more resistant.
--
Stewart Robert Hinsley