Ok, I just tried this and it seriously did work. I did it twice on a burner that's had scorch marks for a year or more and they're gone! For anyone as OCD about cleaning as I am, this is a must! I would be prepared to do it at least twice, more if you've got bad burns. This really works!!!
This space is created by opening the space between the studs in the wall. Small, skinny spot, but look at all of the fabulous storage with small pantry items that take forever to find - a great idea to steal space and have a big impact.