I recently purchased a top of the line stove with a glass cooktop. Every time I use it I get horrible black spots that need to be scrubbed off. Being desperate, I even tried the green scrubbies, coke, bleach, and brillo with limited success. I spotted Weiman Cook Top Cleaner and red Scrubbing Pads and decided to try them. To my amazement, they worked great! Boy, was Weiman a lucky find!