A simple trick i learnt from an old italian chef....Get the barbie really hot, put a few ice cubes on the plate or grill, move them around with the tongsdor barbie mate, and all the grime, including that ol scungy dried marinate, just lifts off, leaving the plate or grill, like new.ps, only do it before ya cook, not after, or you will rust your plate, it cleans that well.