Ugh...BIRDS!!!

[SPitz]

Brand new Diamond Brite yesterday and started filling right away. At some point during the day, some birds decided to use the sun deck as a dumping station and left three little piles of bird poop. I tried to scrub with a brush but to no avail. Is there any way to get these stains out? Good night, I am going to be highly irate if we're stuck with bird dung stains!!!