What Anon :59 posted is exactly right. I've owned glass top cooking surfaces for the past close to 20 years and you either use a razor straight blade to scrape it OR glass cooktop cleaner (most big box discounters - Wal-Mart/Target - have it in their cleaning supplies) with a damp sponge or placstic scrubbie. Not steel wool or SOS pads.
One thing many people do not know about glass cooktops that own them.....DO NOT BURN SUGARS on the burners. This can damage the surface of the cooktop. That's important to know if you make your own jellies, jams, cooked frostings, or candies. As soon as you spill it, CLEAN IT UP!!! It can sugars can pit the glass.
at 5:44 PM on Mar. 20, 2010