On Mon, 12 Jan 2009 21:44:38 -0800, "CWLee"
wrote Re White Bird-Poop on Concrete?:


From time to time some bird - or perhaps several - takes up
residence in a tree overhanging a concrete walkway, patio,
or driveway. Very quickly a good bit of white bird-poop
accumulates. I haven't found a good way to remove this from
concrete. The hose gets the top 50% or so, and a stiff
broom then gets maybe another 20%, but the last 30% or so
just stays and stays.

Anyone here found a good way to remove the residue after
modest hosing and brushing?

Thanks.

Try keeping it wet. You can do that by old piece of cloth over the
spots you are trying to remove. Wet the cloth down and spray with a
household cleaner such as Mr. Clean, Simple Green or whatever. Keep it
wet and soaking for about an hour or two. Then remove rags and wash it
away. Repeat as necessary.