I have the Screaming Yellow PI Wind Whisper jacket. I got grease on it last year and "Shout" got it out. I sprayed it, let it sit a while, then washed in the machine. I was considerably lighter. Do not put it in the dryer!!! I sprayed more shout, let it sit, then tried to rub it out. After the process repeat a few times, I have no more grease on my jacket.

My Mom has been using Shout for years, and I do not think it has ever failed us. Sometimes you might have to add a little elbow grease but eventually stains will come out

~ JoAnn