any pre-wash stain remover (for your laundry)will work.spray some on the stain and wait about 5 min.spray a little more and use a white cloth ,punch the capet,try not to rub the carpet.for next time home depot sells a product called folex.
You might want to try rubbing the carpet with alcohol. I got a paint stain in my carpet a while back and rubbed it with pure alcohol and got rid of it.
08:28AM | 12/19/15
Use rubbing alchohol to rub the area or aka iso propyl alcohol.then wipe with a towel so that the towel will absorb the stain do it again.For detailed info visit http://thecarpetshampooer.com/carpet-cleaning-infographic/amazing-carpet-cleaning-tips/