Effective Stain Removal Tips for Restaurant Towels, Napkins and Linens Grease stains are an occupational hazard in any commercial kitchen. A splash from the fryer, a sauce-stained apron, a tea towel dragged across the grill one too many times, by the end of service, your linen looks like it’s been through a war. Unlike a coffee spill on a shirt, grease doesn’t come out with a quick rinse. It clings to fabric, sets in with heat, and, left untreated, it’s there for good.