1. Don't put any cleaner on the carpet that might change it's color without testing it on a piece of scrap or in the back of a closet before putting it on the stain.
2. Mix baking soda with water, 3 parts water to 1 part baking soda.
3. Apply to the stain and allow it to soak about 15 minutes.
4. Vacuum the stained area with a wet pickup vacuum cleaner using the crevice tool.
If the soda doesn't get it all in two or three tries, you can try dry cleaning fluid but don't use any solvent that is flammable in case the fumes might get to sparks in the vacuum motor and cause a fire.
Answered Apr 10, 2013
Edited Apr 10, 2013