Chris wrote:

>I heard at a lecture that oxalic acid and a particular affinity for iron.

Yes, excellent for removing rust stains.

> Thus careless use will affect the iron in the frame wires, the nails
> holding
> your hive together

Not noticed this.

> and, more importantly, the iron in your bloodstream, causing
> anaemia.

Oxalic acid is extremely poisonous - I think that you would be dead long
before suffering anaemia!

Peter Edwards
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