I bought these pans 6 months ago. They started off great. We never used the dishwasher. To clean them, we only used the sponge sold by green pan. Never used metal cooking utensils. Only silicone. We always allowed the pan ample time to heat up before use. About 30 days after purchase, the pans had no non stock ability. Became so difficult to clean. Honestly worst pans we’ve ever owned. Cooking anything from eggs to chicken or even heating up something would make the most difficult stained on mess that took significant time to clean.