This cookware is specially treated or coated to prevent foods from sticking. The special finishes permit the elimination of the fat usually required to lubricate cooking surfaces, and generally can be easily cleaned without scrubbing. The processes used to create the nonstick finish vary; some finishes can flake or scratch over time or if used with metal utensils. (Although some manufacturers claim that their cookware is completely scratch-resistant.) In general nonstick finishes should not be subjected to the high heat of broilers; manufacturers generally recommend a maximum temperature. Most nonstick cookware is dishwasher safe, but read the manufacturers’ use instructions before cooking with and washing any nonstick cookware.