How can I remove grease from cargo pants?

my uncle got his car serviced and there was grease/oil on the doors (transparent). Some of it got on to my cargo pants and now I dont know how to get rid of it, will ordinary detergent work?How can I remove grease from cargo pants?
I use a liquid dish soap, such as Dawn. It is a great degreaser. Rub it into the stain 20 minutes before you wash it. As others have mentioned, drying it can set the stain, so hang dry or use a no heat dry setting so you can make sure the stain is out.How can I remove grease from cargo pants?
Apply dawn dishwashing detergent to the spot, and rub the spot with it. Then throw your pants in the washing machine. This should take care of it.
Put some Dawn dish liquid on the stain...
get some mechanics hand cleaner. Fast Orange, or GoJo. Without Pumice. Your Uncle probably has some. Should do the trick. Any of the stain removers, OxyClean or Shout they work well too. BUT, after you wash them inspect the stain before you dry them!!!!!!!!!!!! Heat sets stains. If they're not clean, repeat!!
GoJo got my stain out, but it also took some of the color off. Since there work pants i didn't mind any way.
Bleach. Scrub the grease out hard.
If you use just ordinary detergent, it will only take away the greasiness, but leave a slightly dark spot. I would suggest pre-treating the stain with some 'Goo Gone.' It's in almost every hardward, drug and grocery store, clear bottle with a black cap, and yellow liquid. I use if for all kinds of problem stains and things that are hard to remove. Good stuff!
You can use Liquid Dish soap %26gt;%26gt;%26gt; DAWN %26lt;%26lt;%26lt; is a good one. Liquid Tide is also good. Rub it in good and work it around to help break it loose. After you wash it...check the area BEFORE you place in dryer. the dryer sets in a lot of these stains. If it doesn't come out during those first attempts....try spraying it with WD-40...it actually made of fish oil...which washes out easier than machine oils. The WD40 helps break down the heavier oil and make it easier to get out. Once you have soaked the area good with the WD40...repeat the earlier steps with liquid soaps.