Weird white spots on concrete around pool

Karl103

Bronze Supporter
Aug 18, 2018
48
Rolesville, NC
Got a mysterious problem with concrete staining. Hundreds of small white spots all over concrete- popped up one day. Tried power washing it but did not resolve. Doesn’t look like typical bird poop but that’s my best guess. But hundreds of small spots. Almost looks like white paint and only on certain spots on concrete and not grass, etc. see photos. Any thoughts on what they are and how to clean up?935A94AD-6719-4980-8147-EF15E03C7599.jpeg71D69704-CA1F-4C78-B296-5E2FF71EFC1A.jpeg
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
21,116
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
My first thought is bird poop. Bird poop can be quick sticky and will weather away in time.