This is what I used
Apply baby powder on the stain
Had to apply powder 3 times. First application, let it sit for about 4 hours and brushed the powder away. Turned the trouser leg inside out and applied powder on the stain since the grease had penetrated the cloth. Let it sit for about 4 hours. Brushed powder off and applied on the face side of the cloth again. Let it sit over night.
This is how it looks this morning.
Not sure if there is minimum amounts of time for the powder to work but leave it on at least a couple hours. I have two cloth brushes, soft bristle and a firmer bristle brush, depends on the cloth you are working with. Since this is a dry application you usually don't get a ring or spotting from the cleaning. This works perfectly on silk ties or jacket lapels, etc. Can save you a dry-cleaning and frustration.
Couple of things to remember.
DO NOT rub the spot when it first happens. blot with a cloth
DO NOT apply water
WAIT, let the powder have time to absorb the stain