From night to day. Yup I was bored last night so I cleaned my grill. I used Easyoff BBQ grill cleaner and have to say it worked fine. In fact this time I followed the direction and let it sit about forty minutes after spraying it on. I wiped it off with paper towels. I did not use on the plates as I always wrap in foil. Even though some do not agree I find wrapping in foil easier to clean to lean them.