Did u say pizza?...

I do see this is an old thread, but I also use Dawn on grease stains. I rub some in and let it sit for about an hour before running it through the washing machine. Another product I like is the Resolve stain stick (looks like a deodorant stick). I can rub that into the spot and let it sit for an hour or more before washing. For set-in grease stains that have already been through the dryer, I will use both the Resolve stain stick plus Dawn dish liquid, wait an hour, and then wash and dry again.

Just discovered this in a moment of need. Dawn worked wonders on a pizza grease stain on my cream shirt. Amazing. Thank you!