I received this for my birthday. I was so excited to used. I heated up pre cooked frozen eggrolls... They came out perfect... I guess a few drops of oil dropped on pan.  I noticed the oil stain so I decided to clean it. The oil would not come off. IN FACT... The drop tray was RUINED... And the worse ...it looks so bad. I don't even want to cook with it. I can't imagine actually cooking chicken or something that would drip oil or anything. You will have to replace tray. Ever use.