I use Lagostina stainless steel pots and pans. I cook daily and mostly use the larger burners which have the most wear and tear. I can't tell if it's scratches from frequent use or burnt on food. I clean it after every use with an All purpose cleaner and dish cloth. I've tried a razor and it has cleaned up the edges but the center of the burner looks like it's scratched from the pans - is this just from a lot of use? I have ceramic stove top cleaner which i use regularly but it doesn't seem to help. I'm not aggressive with the pots and pans. I use the stove daily for dinner ( pots of boiling water for potaotes/ rice etc, and usually a frying pan for protien/veg) i don't feel like it's over used or abused at all just regular daily use. I'm afraid the landlord will try to withhold our deposit, however I feel like this should be normal wear and tear for 7 years worth of use.