Removing Vomit Stains On Carpet

Is the carpet discolored from the cat food or from the cleaning process? If it is from the cat food, you should be able to get this out with a good quality carpet cleaner. If it is from the cleaning process (you mentioned the stains showed up later?) than you likely have a more difficult problem.

Just be sure NOT to use bleach. You'll get rid of the stains as well as the carpet color! Oh, and change brands of cat food to one that has less added color.

Cats do love to throw up. They do it if they feel full, or have a hair ball, or for the heck of it. Their natural diet is mice so after they eat one they throw up the bones and fur. Except that they prefer cat food. First find a food with no added food color. It will be listed in the ingriedients. The tri colored dry food is the worst for staining. Take as much up as you can with a paper towel then use soap and water to wash the spot. I actually buy a bottle of rug cleaner where they rent rug doctor and dilute it. It lasts a long time. There is also a foam spray called Resolve that works well too. Just stop the food with the dyes in it.