Can anyone help diagnose and correct the white staining on my patio? See pics.
It’s about three years old (or four?) and during installation were told to expect some efflorescence but that it would soon disappear. I’m not sure if that’s what I’m seeing or something different. I’ll note that it’s heavy in the circular outcropping, which is the lowest point (intentional slight slope) and the rest of the patio is pretty clean. I even wonder if it could be fertilizer or other lawn products, but I would then expect to see the staining in other areas too.
And tips on removing would be great. Preferably anything that won’t destroy the lawn. Thanks!