Now 3x Stronger! Chore Boy Ultimate Copper Scrubbers are machine knit from pure copper to quickly remove baked-on foods and burnt-on grease the first time-inside and out. Ultimate Copper Scrubber pads aren't messy like steel wool. They will not rust or splinter, making them perfect for cookware made of stainless steel, copper, anodized aluminum or multi-clad. They are also ideal for glassware, barbeque grills, stove burners, oven racks and other heavy-duty cleaning applications.