What is the best way to get out carpet's grease stains?

Answer 1

I like Oxy Clean, it has always worked great.
Use hot water, dissolve the Oxy in the water, soak the area to be cleaned, blot the area with paper towels & allow to dry.
Hope this helps.

Answer 2

Dry cleaning solvent,dish washing or fine fabric detergent, white terry towels, white vinegar, warm water, measuring cup, vacuum. Dry cleaning solvents can be purchased at your grogery store or at your local carpet cleaning supply retailer.
Work on removing the stain as soon as you notice it. The longer the stain is left on the carpet the greater the chances are of the stain setting.
In every case remove all excess wet or dry material before attempting to clean. Blot wet materials using a white terry towel (check helpful hints for a detailed description of blotting). Vacuum excess dry materials or gently scrape up materials with a spoon.
Apply a small amount of dry cleaning solvent to the white terry towel and blot the stain. Continue until no further transfer of material to the towel is apparent.
If the stian remains proceed to the next step.
Mix 1/2 tsp. of dish washing soap or fine fabric detergent into 1 (8 oz.)cup of warm water.
Apply a small amount, blot or tamp and repeat until the stain is removed. Be patient. Complete removal may require repeating the same step several times. Tamp down on the carpet, do not scrub as this may disort the texture of the pile.
Cover the stain with the towel and press down repeatedly to absorb the stain material and detergent.
Once the stain is completely removed, rinse the area with cold water; blot with a dry white terry towel until all moisture is removed. Repeat this process several times to remove cleaning solution residue. (Residue can attract soils).
If the spot or stain turns brownish when dry, mix 1 part white vinegar and two parts water. Apply a small amount and blot. Repeat only once.

Beware:
Never use a stronger concentration than is recommended. Never use laundry detergent or automatic dish washing detergents because they may destroy or dye some fibers. Never use non-volatile solvents as they can cause delamination in synthetic carpets either immediately or over a period of time. Non-volatile solvents do not dissipate at room temperture & will remain in your carpet. Never pour solvents directly onto your carpet or saturate your carpet. Instead apply the solvent to a white terry towel and blot the stained area. Never use highly combustible solvents such as gasoline or paint thinners.

Answer 3

Use "lestoil" (product name) and mix with water to dilute it. I actually use it instead of carpet cleaner for the whole carpet. it works awesome in the rental cleaner units or even with a bucket, mop and a wet-vac shop vac afterwards. Dries and leave a "pine" scent... good luck