Product review (2 stars): Melt and Catch Fire! No thank you!
My stove was scarring my countertop edge, and there was a gap. So though this would help.
First it melted, but just tried to be careful with the heat.
Then it caught fire, fell between the cracks still burning on my wooden floor. If I wasn't quick on my feet, and good at smothering fires it would have been a real issue.
So don't use with a powerful gas stove... or maybe don't use at all if you value your house.