To be honest, I wouldn't cook with them anymore. DuPont says it's safe
, but it just doesn't sound appetizing to me. But then, I only have one piece of non-stick cookware and I use it almost exclusively for eggs.
If you want to continue using non-stick cookware, be sure to wash it by hand - dishwasher detergent can damage the coating - and don't overheat it (over 500 degrees F) or heat the pan while empty. HTH.