Vomit certainly ranks up there among the most unpleasant things to deal with, but as stains go, vomit is usually pretty manageable. Because these are food-related stains, the severity can vary with the contents. As with most food stains, it is best to address them as soon as possible.
How to Remove Vomit Stains on Clothing
Try the following steps to remove vomit stains from washable clothes. For dry-clean-only garments, follow step one below, then blot the stain gently with a clean, white cloth dampened with cold water. Blot the area with a dry cloth and take the garment to a dry cleaner as soon as possible.
Remove as Much Vomit as Possible
The smaller the stain, the easier it is to tackle. Remove the bulk of the material with a spoon or a butter knife. Scrape only as much as necessary to remove the vomit without roughing up the clothing's fibers. Old stains may need to be gently scraped away too.
Rinse With Cold Water
Run cold water through the back side of the stain to force the stain out through the front of the fabric.
Soak the Stain
Soak the fabric in cold water with color-safe bleach. Another alternative is to soak the fabric in a solution of 1 quart warm water, 1 tablespoon ammonia, and 1/2 teaspoon liquid detergent (be sure that the detergent does not contain bleach, or toxic, potentially deadly fumes could result). Use an old toothbrush to make light strokes on the stained fabric (called tamping). Blot in between tamping with an absorbent pad. Rinse well with water to fully remove the ammonia. You do not want to use hot water because it will set the protein in the stain. Repeat this process until the stain is removed.
Rinse, Spot Treat, and Wash
Rinse the clothing thoroughly in cold water, then apply a stain remover stick, gel, or spray to the area. Let the clothing sit for three to five minutes. Wash in warm—not hot—water, using a liquid laundry detergent.
How to Remove Vomit From Carpet
The trick to removing vomit from carpet, as with other bulky stains, is to work from the outside toward the center of the stain to prevent spreading out the stain.
Remove the Vomit
Wipe up as much of the vomit as you can by using a rag or scooping it up with a spoon.
Use Stain Removal Product
Apply Stain-X Carpet Stain Remover, Spot Shot Instant Carpet Stain Remover, or a similar stain remover to the area. (Do not use these products on wool rugs.) Make sure you do not force the stain deeper into the pile of the rug.
Clean the Area
Mix 1 teaspoon of mild, non-alkali detergent with 1/2 pint lukewarm water. Sponge and blot the liquid with an absorbent pad until there is no more stain to remove. You can also try sponging the area with a mixture of 1 tablespoon ammonia and 1 cup warm water. (Do not use ammonia on wool rugs.) Blot the excess liquid, and continue until there is no more stain to lift.
Lift the Stain
Place an absorbent pad over the damp area, then set a heavy item on top to weigh it down (or simply step on the pad). When the liquid is fully absorbed, take the pad off and let the carpet air dry thoroughly.
What Can You Safely Mix With Bleach? Water Quality and Health Council.