I soak all of my fat stained clothes/aprons/linens in dish soap and baking soda in cold water. I use the dish soap on the actual cloth, kind of scrubbing it in a bit, then adding a bit to the water as well. I use about a tbsp of baking soda in a sink full of water. I do it overnight, and then wash and hang to dry and I've never had a stain that wouldn't come out this way! My mom couldn't believe I didn't have to dry clean my clothes after cooking bacon and getting spatters all over my nice shirt!