Red carpet stain, more advice...

I had very bad stains on the carpet in my truck from hauling around girl scouts. We had spilled sodas melted candy and spilled milk shakes, some of the stains had been there a year from lack of time to clean them. I bought a bottle of carpet cleaner called Folex at Bashas, it's also available at Walgreens. My friend also used it after (yuck!) her dog had the runs on her new white carpet, it took it all out. Red stains are the worst though. My husband reccomends spot shot to all of his customers (we sell floor covering)it's available at Walmart. Your last resort would probabally be to have a carpet repair man cut a piece of carpet out of a closet for you and patch it in where the red spot is, keep in mind that if your carpet is very old the closet patch may be lighter in color and depending on the type of carpet the seam could show. Get someone reputable. Good Luck!