Product review (5 stars): Saves work and looks great.
They work great to keep my oven floor clean.  I placed it on my bottom rack and it catches anything that drips. To clean it, I pull it out and the mess slides right of into the garbage. You can also place your pans directly on the liner which I need to do when I fill my oven. The black color looks much better then the tan which discoloration from the heat. I also placed one in my toaster oven.