The best advice when dealing with grease stains is to treat them as soon as possible. Most treatments can work on set-in stains as well as fresh ones, but the sooner you tackle the stain, the easier it will be to remove it. Use the hottest water possible when washing out a grease stain. This gives the detergent the boost it needs to remove the grease. Check each time after washing to make sure the stain is completely removed before drying the garment. A stain that has gone through the dryer will be much more difficult to remove.

If you are dealing with thick automotive grease, the excess grease should be scraped from the stain with a knife before you treat it. Many people have found that absorbing as much oil from the stain as possible before treating it helps the stain removal process go more smoothly. This can be done using an absorbent powder. Cornstarch, baby powder, and baking soda are some of the best products to use for this purpose. Simply apply the powder to the stain, working it in very slightly if necessary. Let it sit for a few hours or even overnight, and then brush it off. This method is especially useful when dealing with more delicate fabrics that may not be able to handle harsher treatments.

After absorbing as much of the grease as possible, you may need to move on to other treatments to completely remove the stain. A variety of products can be used for this. If you are someone who consistently has to deal with grease stains, you should stock up on products that are formulated to deal with tough grease stains on laundry. Otherwise, these products aren't always necessary. Most people find that applying plain old dish soap to the stain will do a fine job of removing it. Just work a little soap into the stain, being careful not to spread the grease. Let the garment sit for at least a few minutes, and then lauder as normal. Liquid laundry detergent, dish washing detergent, and even shampoo can also be used in this way. You can also make a thick paste out of powder laundry detergent and water to pre-treat the stain.
Grease stain got you growling? Here are great ways to make greasy goofs disappear. 
Baby Powder

Frying foods can be dangerous business — especially for your clothes. If you get a grease splatter on your clothing, try dabbing the stain with some baby powder on a powder puff. Make sure you rub it in well, and then brush off any excess powder. Repeat until the mark is gone.

Baking Soda

Say good-bye to cooked-on grease stains on your stovetop or backsplash. First wet them with a little water and cover them with a bit of baking soda. Then rub them off with a damp sponge or towel.

Cornstarch

Even the most careful cook cannot avoid an occasional spatter. A busy kitchen takes some wear and tear but here's a handy remedy for that unsightly grease spot. Sprinkle cornstarch onto a soft cloth. Rub the grease spot gently until it disappears.

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