*** CAUTION***
Caustic soda will take your skin right off and is an irritant even in it's
weakest solution.
It will bring cold water to the boil when mixed and may give off a sharp
smell.
If you have any pets or kids they will need to be kept away, and
preferably
locked up:-p
you will need old clothing when using it as it acts like acid.
I don't know the toxicity of it WRT plant life but can't imagine that it
will do them any good.
Only use this method if you are confident that little or none will end up
on
the soil - it's ok for patio's with drains to wash it into.


HTH



VERY glad I have a power washer :-))

Soooooooooooo much safer :-)))))))))

mike