Q: I've been living in a new apartment for about six months. When we moved in, our white gas stovetop was impeccable. After using the stove, a brown discoloration started to appear under the most used burners. At first I was able to clean the discoloration using household cleaners (409 All Purpose or Windex Touch Ups) and a scrubbing pad. After a good clean, the stovetop will remain white for a while, but about once a week I have to repeat the process to remove the discoloration, regardless of whether or not any food/grease/oil gets down below the pan. And the discoloration is getting worse and becoming harder to clean.