"Mike" wrote in message
...
Okay,

I've got a concrete drive which gets marked badly at this time of year by
starlings who are eating berries and/or blackcurrants and leaving purple
marks everywhere.

I have tried scrubbing the concrete which brings up the original colour of
the concrete but the bird mess mark remains.

Any advice on what household cleaner or chemical would help remove these
stains ?

Thanks.

The best way out of such a situation is to be truly thankful to the birds.
The remnants of the bird dung will make a nice fertilised patch on the
concrete for a lichen to colonise.

Franz