On 2 Aug 2018 18:11:48 GMT, David wrote:


In the kitchen there is a nice wood worktop which has turned black around
the sink. Yes, it was a rental property. Looks like a wood block work
surface and far to good for a rental. Light colour.

Anyway, once the wood has been soaked long term and turned black is there
much that can be done to revive it?

Yes - Oxalic Acid . Wash several times with a solution of Oxalic Acid
will remove the black and restore the colour.