 Things you need to know before using your non-stick pan. A new study found that thousands to millions of tiny plastic particles come off your teflon coated pans while you cook, going straight to your food and causing major concern for your health. While these pans do make life easier in the kitchen, one small crack can release about 9,000 plastic particles. Stay away from metal utensils that will scratch your pan. Avoid high heat. It can actually peel the coating off. Don't use acidic ingredients like tomatoes and limes. It can cause the coating to break down. And avoid the dishwasher. Even if it's dishwasher is safe, the high heat and water pressure can cause the coating to flake or go the stainless steel and cast iron route and save yourself the trouble.