A couple of weeks ago my boyfriend accidently got a small drop of chocolate on a brand new Rayon blend shirt. The area of the shirt now stained is white. It was a few days before he showed it to me so I didn't have time to treat it before it set in. Can this shirt be saved and if so what can I put on it? I tried pre treating it with liquid laundry detergent (this normally works), but having difficulties with this one.