I need help removing grease-like stains/spots from knit shirts that appear after they are washed and dried. Does anyone know what causes them and how to get rid of them? They usually appear on dark colored polo type knit shirts and look like a grease spot. I tried putting in the detergent and letting the washer fill with water before adding the clothes but I still get these spots. Also, once I get them is there any may to remove them? Thanks to anyone who can give me some advice on this.
