That may not come out! Power washing may help or concrete paint. You can get both at your neighborhood hardware store.
red chaulk has a red dye in it - it will be there for years. use blue instead. red is good for layout on subfloors, but NEVER on a finished product I have removed some stains from concrete with a pressure washer, but red chalk is a tough one, the best I can do for you is give you this site: * http://www.browns-services.com/decorative_care.php
all the animals that live off the red squirrels
try pressure washing it off. . .this should lift off that kind of paint or you can use acid wash for concrete
By the Romans
pour more concrete over the top and smooth it out
you have to sand blast it off
they die off and your body automatically makes new ones :)
You need to try and get the concrete off before it settles. You can try scraping it off with a razor blade.
You cannot do that.
How much is 4.5 yards of concrete in Red Oak TX
The easiest way to get melted plastic off of concrete is using a heat gun. You can heat it and them absorb with a porous scrap cloth.
We would need to know what caused the stain and what kind of surface it's on. The procedure to clean an oil stain off of concrete is going to be much different than cleaning a red wine stain off of furniture.