Remove the solids. Use a piece of cardboard or a couple of dry paper towels to pick up the bulk of the mess. Be careful not to press anything deeper into the carpet fibers.
Soak up excess liquid. Blot and dab the spot with a dry cloth or paper towels until you can't absorb any more moisture. Use a clean section of your towel each time.
Spray cleaner. Saturate the stained area with Simple Green Advanced Dog Bio-Boost Stain & Odor Remover.
Scrub. Gently scrub the area with a clean cloth or soft-bristled brush. Work from the outside edges of the vomit stain inward. Be careful not to rub too hard, as this will push the stain deeper into the carpet.Let it sit for about 5 minutes.
Blot clean. Blot with a clean, absorbent cloth or paper towel.
Dry. Allow the area to dry. Try to prevent your pet and other people from walking on the cleaned area until it is completely dry.
Vacuum, if desired. Once the stain is gone and the area is dry, vacuum the carpet to restore softness and evenness.