Grease stains contained by white shirts? I work at a restaurant. I have to wear white shirts and...

I work at a restaurant. I have to wear white shirts and black pant & i always seize grease stains all over my shirts. I of late cant keep buying contemporary shirts but the stains wont come out! Any ideas !?!
Answers:    Apply some Dawn dish solution directly to the stains...
Dawn dish liquid get grease stains out
Just rub some on both sides of the garment and wash