Soak your stained clothing in cold water for several hours. Use a bucket or large bowl so it can remain undisturbed. Boost the soaking power by adding baking soda or oxygen cleaning powder to the water to help loosen the stain.
Pull the soaking clothing out of the water and add a few drops of dish soap directly on the stain. Scrub the fabric between the knuckles of both hands, frequently dipping the material back into the water to rinse away loosened particles. If scrubbing with your hands isn't working well enough, use an old toothbrush to scrub directly on the stain with dish soap.
I hope it will help...
