How do you get rid of food colouring on concrete?

To remove food coloring from concrete, start by mixing a solution of warm water and dish soap, then scrub the stained area with a stiff brush. For stubborn stains, you can apply a mixture of baking soda and water or a commercial concrete cleaner, letting it sit for a few minutes before scrubbing. Rinse the area thoroughly with water to wash away any residue. If the stain persists, consider using a pressure washer for deeper cleaning.