How do you remove green stains from concrete ?

Question

I just moved into a new condo and my back patio has a green stain on the concrete, where the sun hasn't shone on it. I was told to use detergent to remove it. But I'm not sure what kind to use.

Answer 1

I use Bleach on mine, but be careful what you get the bleach on. Make sure to take up any out door rugs or anything you wouldn't want the color changed on.

You need only use a small amount then I take my broom and scrub it in and it all comes up and looks brand new !!

Answer 2

You can probably just powerwash it with some Tide or even bleach would work...sounds like mold growing.

Answer 3

You mean mould or green paint/ dye?