Product review (2 stars): Did not do the job.
These really don't work well for me. Not worth sending back, but they just don't cover the entire area, and they get stuff all under them, so really, now you have 2 things to clean. I think that it might keep some of it off the stove, but really, not worth getting. You can get the foil ones that do a better job at Walmart or Target, but I wanted them to be black, so I tried these. They are just too small and don't do the job. The circle in the middle around the flame area is also just too big, so whatever over boils or happens, just gets all under the pans.